>after losing to the Chinese

The total market cap of all the Chinese car companies combined is about 300B.

Tesla alone is worth ~5x that, because the market rewards this behavior of chasing new things.

If Tesla suddenly pivoted to 'caring about cars' and tried their best to produce low cost reliable EVs, the market is going to punish them by valuing them at less than 300B. That is, if they succeed at that. If they fail, which would be more plausible, they go bankrupt.

Why would they voluntarily do that?

We could do that by changing public opinion or regulating what public companies must do/report, but that seems somewhat unlikely. It's so much easier to claim that autonomous driving will be solved in six months :)