In 50 years do you see any of these companies still existing?

iCarly fan detected

its simple we need redistribute their property

This would be my prediction ignoring material conditions. However, the more likely event is another great depression-level crisis that either forces another wave of progressive anti-trust reforms temporarily gutting these monsters or an end to capitalism itself.

This won't matter unless the CCP falls out of power. It's not a matter of if they want rights, even if they get them the cheap labor will just shift over to some other group like China's vast network of political prisoners who are basically slaves or one of it's many African colonies who are basically slaves.

Facebook is likely going to die. Apple, Amazon, and Alphabet can easily diversify like Microsoft did

Apples main hardware is made in Taiwan so they already have more rights. If Apple really wanted to they could move assembly to somewhere else

The problem with the graph is that it fallaciously abstracts a very diverse revenue stream into being one revenue stream. You wouldn't say that Walmart isn't diverse because "they sell stuff". They're arguably more diverse than, say, Barnes and Noble, or Hobby Lobby.

AKA selling costumers data.