Not exactly. There’s a ratio of RPMs of the drive motor to the specific input of the alternator that generates the correct frequency. It depends on the way the alternator is designed (ie number of poles) that will yield the correct frequency, almost like a gear ratio, that is optimized for efficiency, and power plants have to constantly make slight adjustments to the drive motor speed the keep the frequency exact (usually done automatically within the drive control system).
I’ve never seen frequency be an issue in a residential system, but in theory it could happen.
If you like the Wikipedia rabbit hole, check out the Wiki game on your given app store. The basic idea is that you have two separate topics, and you have try to link to the second from the first in as few clicks and time as possible. It’s actually quite fun and you end up reading about some really random stuff.
That would require every government worldwide to be on board. Then you’ll have a couple holdouts, and they’ll take in the dough from everyone wanting to host their content there. While there is a mile-long wishlist from the powers that be, they’re still going to chase what’s profitable.