First of all, China is a dictatorship so anything can happen, and happen quickly - while in democracies the population must (directly or indirectly) decide about something such as a PoW ban.
Secondly, this ban showed us very nicely how censorship-resistant Bitcoin is. The hashrate dropped a lot and nothing changed. Difficulty adjusted, miners moved around the world, started back up, all working as designed.
Furthermore, bans of industrial mining wouldn't even be that bad. Satoshi's original whitepaper intended mining to take place in everybody's home (on CPU back then).
It would be worse for the environment though, since industrial miners tend to have access to cleaner energy than normal households. Industrial miners also put less stress on the grid than if every household suddenly had a 1-3kW miner running 24/7, because they have their own power lines.

So, for the sake of the energy grid and the climate, both of which you seem to care a lot about, it would be better to let these mining companies do their thing.
Either way, Bitcoin doesn't care where the hashpower comes from and it can't even be stopped if a country as large as China bans it. That should be proof enough, isn't it?