So which companies will do well? The already biggest ones, including the government itself. That's the only metric that matters, and this is indeed what we've seen since WW2.

S&P500 -> S&P100 -> FAANG -> MAG7 -> what do you think comes next? One, and only one, of the big 7 will win.

The problem is: everyone wants everything. The obvious "natural" fix is simple: go back to more power to smaller political entities. That will destroy large companies, as the smaller entities will change laws to make that happen, to protect themselves. Which means, no apple, no internet, no (significant amounts of) oil, no ... This is also ignoring that large entities will fight to defend themselves.