Anyone who says that the battery itself is not revolutionary, let alone batteries large enough to power a car and now an entire house is not revolutionary --- well, its not that I would disagree, its that I guess we have a different definition of the word "revolutionary."
Energy storage has roughly evolved from:
1. Burning wood.
2. Using flowing water.
3. Fossil fuels.
4. Using 2 and 3 to produce electricity, which, regardless of how produced and on what scale, has the attribute of having the amount produced having to equal the amount in use.
5. The actual battery, looked at in comparison to say, a pile of wood, a dirty pile of coal in one's basement, or being lucky enough to live next to a stream, was revolutionary in that as you can see its different from any prior form of stored energy.
When you get to 6, battery technology large enough to power cars and houses, sure, it may just be a bigger battery but its revolutionary since in response to development 4 the modern world evolved to live , indeed survive, on electricity.
I don't know what more you would want.
Before battery tech, solar is obviously a revolutionary way of producing power, but without the ability to store it, well, it has its own limits since the electrical grid evolved and exists wiithin the limits of real time production.
Maybe you just have to watch a solar and PW system to sort of get it.
To me, this is one of those things many really "dont get" until you actually are doing it. Either you go through a multi day power outage with solar panels on your roof, frustrated that you cant use them, when "the sun is out, why do I not have power when I have solar?!?!?!"
Or, you know that for the most part, it doesnt matter how much the utility changes their TOU rates to, if you have a system + storage large enough to basically not pull from them for most of the year anyway (unless they try to tack on some sort of $100 a month " you have solar" surcharge just to be connected).
Or, you know that, during the summer, you can set your AC pretty much wherever you want, and still not worry about paying "peak" rates since they have shifted them to the afternoon / evening, when you have little to no solar.
Or, you know that, you can pretty much guarantee you will have power at your home, regardless of what is going on.
For many, these are incredibly reassuring feelings, but it is also one of those "have to live it to notice" type things. Just like driving a tesla vehicle is for me, actually. Having more power / performance than the BMWs I drove, while being cheaper to run for me than a econobox car, AND never having to plan to fill up my car ever again.... I have only been to a gas station like 3 times since December of 2018, and that was to fill up my wifes car. She puts gas in her car for the most part. It sounds like small things, but when you are living them, it becomes more than the sum of what you are talking about.
Its different than having a generator, at least to me, in the same way that a ICE vehicle is different than driving a performance EV.
If these products were not revolutionary, Tesla would have been a dead company a LOOOONNNNGGG time ago. The only reason they can get away with treating customers in the manner in which they do (many times) is BECAUSE the products are so good. Everyone keeps saying "but so and so is making such and such" and eventually someone will make a product that people want just as much.
Right now, though, their products are revolutionary, and the rate by which they are purchased means in general the public agrees.