Capitalism involves private ownership, voluntary exchange, and competitive markets. These are all things "the capitalists who run these businesses" are trying to undermine. Netflix/Spotify are built on a stream-don't-own model. Apple wants to lock you into their walled garden where you have no choice but their products. And all the FAANG use regulation and corporate buyouts to keep the competition at bay.

If capitalism is really what you're after, the answer to that is an open, free, and private web where people own their hardware/software/information, have total freedom of choice thanks to free and open standards, and can compete on the strength of their service without fear of antagonistic regulation or buyouts.

The key problem with regulation is that all the large tech companies want the same kind of regulation which helps secure their position against competition and they're all well off enough to afford sizable lobbying budgets. So any regulation will have their say on it, while having little voice in that discussion for the public good (we have, what, the EFF and the CDT?).

If you think that's paranoid, simply review the history of the railroad barons.

Capitalism itself is actually supportive of the web as a platform and it's just that the aspiring "internet barons" are the antagonists. If we let them define more regulation of the internet, we're only securing their position for them and reducing the likelihood of real competition.