One possible version of the simulation:
Elon will have the biggest face palm if legacy manufactures throw in the towel due to battery constraints, poor drive train design, and inability to be profitable with EVs. The company was designed to accelerate the transition to sustainable energy...it'll be a sad day if Tesla ends up having to do this alone. They may just do another round of freebie giveaway. If Tesla continue to dominate, selling 10-20x more than their nearest competitors then eventually there's really no point pursuing. Jag/LR is in deep financial trouble right now with the iPace yielding absolutely nothing in ROI.
So far not one legacy manufacture can sell enough of their EVs in a quarter than Tesla can sell in a week's time. Billions spent on engineering and tooling. Every main stream media and short seller helping their cause..and yet they have nothing to show for....
While good for the planet and citizens as a whole, this will be bad for my region and autoworkers in general:
Tesla has won.
They have the cars people want, the know how and equipment to build them, and the desire to do so. Even if other OEMs catch up on tech, they cannot catch up on price due to automation and existing fiscal responsibilities.
Elon's facepalm will be from them not moving soon enough, but he will achieve the master plan. Car sales being 50% EV (on the way to 100%) is a win, even if total sales are only 2.25x Tesla's output.
Overall, less cars being built is better for the environment also (assuming existing get retired before their emissions get bad)
It's immaterial whether a couple of old ICE companies with ~80% obsolete factories tied around their necks survive or not. Some might, the brands will probably survive too or will be bailed out as a matter of national pride, the rest is immaterial.
Capitalism is perfectly capable of replacing legacy gascar companies if they refuse to evolve. If they decide to stay stupid: good riddance.
Capitalism can't because there is no money in fighting Tesla. They are too far ahead of the price reduction curve. The best others can do is imitate and come in at a higher price point which is only relevant due to scarcity. And even then, only until Tesla adds another plant. (Other than non-Tesla body styles that fill unmet needs).
The best glide slope is national subsidies on EV and taxes on ICE to push people into buying non-Teslas now thus funding other OEM development programs. Even then, there will be industrial carnage. (Marco Capitalism perhaps?)