I think from Thiels' capitalist view, he's totally correct on this point.

But, you could also say, from a virus' view, to reproduce and monopolize a body is also a correct point of view.

However, what Thiel ignores is the world is not just capitalist domain, it has living organisms which those monopolies can make life miserable or worse kill. Just like the virus though, he isn't considering the whole body his views are infecting.