[AndrewKemendo]

I already addressed your point, that they could just star their own:

Not only that, if they tried to start their own, they would be crushed just like the others.

As did you in the original reply. So we're going in circles on that point.

You're missing the broader point though. Even if a firm did everything, it would be bad for the economy because of lack of diversity. That's effectively what the Soviet Union did. It's not because it's the government that things don't work that way, it's because the government doesn't have competition that things fail when centrally managed.