The adoption of EV's is going to be a lot faster than many expect but China dominance will take a long time (if it happens at all).
I see some incomplete thinking going on here. Japanese brands made rapid inroads because domestic makers lagged in many areas. Specifically, the big three lagged in ICE technology, manufacturing skill (quality) and cost of manufacture (a big factor) and didn't have the high MPG solutions consumers wanted when the oil embargo happened. The later competition from Koreans (and others) had some success due to cost of manufacturing advantages but they did not gut sales like the Japanese cars did. The big three were vulnerable to disruption in a way that Tesla is not.
The dynamics now are very different. In order to make big inroads into the N. American market, Chinese EV makers will need to establish supply and service networks and that takes years. More importantly, they will need to ramp production beyond levels that can absorbed in China and all other markets more convenient to China. That's going to take a lot of time considering the likely fast rate of EV adoption globally. It's more profitable to sell the cars they can make closer to home as long as those markets have not become saturated yet. They will also need to establish brand recognition and trust, something Tesla started doing over a decade ago.
Another factor with consumer trust is that the state of modern EV technology is still in its infancy relative to ICE technology in the 1970's, 80's and 90's. Catching up to Tesla is a fast-moving target that Japanese and Korean manufacturers didn't have to contend with because domestic makers were stagnant. Innovation for them was a bigger engine or new styling every year. The Koreans could copy Japanese ICE technology that was a few years old and still have a modern product. EV technology that is even three years behind the leader must sell at a discount. The consumer doesn't know how long the batteries will last or what the resale value will be. This means the imports will need a lower cost of manufacture to make inroads. It might not be as easy to compete on price with Tesla in N. America as one might assume, simply because they are manufactured in China (which is actually a disadvantage in many ways). Even Polestar doesn't have but 4 locations in N. America and they were one of the first Chinese companies with eyes on N. America.
I think the Chinese will likely be very successful auto makers, even globally, but I would caution against thinking big inroads into Europe and USA could happen quickly - they need to ramp fast enough to meet the quickly growing demand of local markets and, even in those home markets, they will need to produce at a lower cost than Tesla to gain market share which is far from a given if you want to compare products that are comparable. Expanding globally will take a decade or more to become a force to be reconned with. In the interim the market is wide open for Tesla to continue to expand. Tesla is constantly lowering the cost to produce. Comparing this situation to that of foreign ICE compacts in the '70's, 80's and '90's will not turn up many parallels.