Totally disagree. It's not a lack of expertise or design ability by the established automakers, it's a lack of will. But once they muster that will, Tesla will have to watch out because companies like GM, BMW, Mercedes, Ford, and others can easily outpace and outclass Tesla in almost every way. That is, if they can muster the corporate willpower to do what is necessary.
What I see happening is a bit like IBM vs the PC start ups in the 1980s. IBM had the financial power to crush the start ups if they got their act together, but the nimble start ups out maneuvered them at every turn.
I've worked inside a few large corporations and there is always "the _____ Way" of doing things. There is a GM Way and a Ford Way and a Toyota Way. It's their formula that has worked up until now and they will stick with it until they are facing extinction. GM redid their way going through bankruptcy and they are a bit more nimble company than before, but they are nowhere near as nimble as Tesla.
There is also a thing called institutional knowledge. Every organization has knowledge built up from experience that is passed down from the old salts to the new hires. When I was at Boeing I worked in a lab that did engineering testing on all the electronics (avionics) that went into commercial aircraft. The lab was originally built in the early 1960s and some of the people who built the lab were still around. There were lots of things that weren't written down anywhere, you had to go talk to so and so. Shortly after I left Boeing gave an incentive for older employees to take early retirement and pretty much all the old salts retired en masse. Seven years later I heard about a contract position that had opened up in the same lab and when the hiring manager found out I had worked there with the old salts, he wanted me badly because they had entire systems with poor documentation that I knew about it. Unfortunately this was a month before 9/11/2001 and Boeing put a hiring freeze on just after.
Tesla has the largest experience pool in making EVs in the car industry. Nobody else has the industrial knowledge base they have. They not only know what works, but more importantly, they know what won't work. Various EV start ups have poached Tesla's expertise, but I don't recall hearing of any of Tesla's expertise being hired by an established car maker. Several have gone to Apple, Nvidia, Google, Faraday Future, and other EV start up projects/companies, but if Ford, Daimler, Toyota, etc. have hired any, I didn't see the story.
Those start up projects are trying to build on Tesla's institutional knowledge base to give them a leg up. The major car companies on the other hand are trying to do it all on their own. Several of the majors have learned some about EVs, but they exist in a corporate culture that doesn't respect them. Major car companies make cars with ICEs. Hybrids are becoming accepted, but the majors still think you need an ICE or the car is an eco toy.
Most major car companies only do a few things these days: overall design of the car, final assembly, and make engines. Everything else is farmed out. GM has farmed out most of the Bolt because they don't consider much of the EV drive train anything important enough to do in house.
I'm pretty sure LG is looking to jump into the EV market with their own car and they are using the Bolt as training wheels to learn how to make cars. I expect they will have their own car in 5 years or so.
Anyone who believes that the major car companies are institutionally capable of making EVs that would beat Tesla doesn't understand how corporate culture works in large corporations. EVs had to become a thing from the outside because the majors would never take them seriously otherwise and most of the majors still aren't taking them seriously. Audi, Porsche, Daimler, and Volvo are taking Tesla more seriously than the American and Japanese car makers because they have seen the fierce competition the Model S has given their flagship sedans. They know if the Model 3 is as big a mass market success as the Model S and X have been in their luxury niches, the entire car industry as we know it is at risk.
The mass market ICE makers who don't compete much in the top tier luxury market are still discounting Tesla as a flash in the pan. Go back and read what Bob Lutz has written over the last few years. He encapsulates the mindset of the mainstream car makers about Tesla. He has been consistently wrong in predicting doom for Tesla. He was sure the Model S would be a failure, he was sure the Model X would be a failure. He's been predicting bankruptcy for Tesla in about six months in the future for years. The one thing he's most consistent about it being wrong.
Almost all the top executives at the ICE makers think along the same lines as Lutz.
If the Model 3 crashes sales for Chevy Malibus, Toyota Camrys, Honda Accords, and Ford Fusions, the big mainstream ICE makers will wake up as the European luxury makes have and will start to take the threat seriously, but by then they will be at least 5 years behind Tesla with no access to the number of batteries they need to mass produce anything. The battery makers will be in the driver's seat able to dictate terms on who gets the limited supply of batteries.
Maybe LG Chem will buy a failing automaker and start making LG cars? They have experience with heavy industry (they do make a range of household appliances and I believe they make industrial machinery too). They could have some teams working on some in house EV designs right now.
The major auto makers are in a similar position as IBM around 1983 or 84. The sales of their thing is a much larger market share than the upstarts like Compaq, but the smaller nimbler rivals were catching up fast. One of my classmates in college was the daughter of one of the top executives at IBM's PC division. He sounded the warning about the rivals catching up and how their tech was no better and their prices much higher, but instead of listening, they forced him into retirement. Everything he predicted came true.
When he was forced out (1986), they were working on the second generation PC, the PS/2 (introduced 1987) which was going to kill off the competition. I remember going to a PS/2 demo at school and thinking while the computers looked slick, they weren't really all that impressive compared to what was available already from the competition. The PS/2 was a flop because corporations went with the competition rather than overspend for a so-so computer from IBM.
If the big car companies took Tesla seriously today and did a crash program to develop a Model 3 killer which had the supply chain to be produced in 500K quantities, it would put Tesla on the ropes. But most are institutionally incapable of taking Tesla seriously until they themselves are hurting.
The US has not seen an automotive start up make it since 1925. The only major car company players that haven't been around since before WW II are Korean and those were started in the 40s doing some kind of industry. The big car company executives "know" it's impossible to survive as a car start up, especially a car start up aimed at the mass market. There has been no start up company with no industrial experience that has survived making mass market cars in the car industry in almost 100 years.
The dinosaurs are blissfully unaware the small mammals under their feet are the wave of the future.