I think it would be more fair to say “venture” or “growth” capitalism. Non-profit organisations exist on the same principles of capitalism that for-profit organisations do, and many of them would not exist in a world without the freedom from external governance that all organisations are offered through capitalism.

I know this can be a touchy subject for people on the American left, but there is likely a reason human history has not produced a whole lot of organisations with independent governance outside of capitalism. At least I think you will be hard pressed to find examples of it if you go looking. I know because I’m a left leaning Scandinavian who spent a lot of my youth looking (including a minor in history).

That being said, organisations like Twitter are the worst examples of capitalism. At least in my opinion, in that they are companies that do not generate a profit. But instead plan to, somehow, sometime, generate a profit for their investors. It’s essentially like running a non-profit organisation without any of the moral obligations. Obviously a very cool idea here on HN considering this is a venture capitalist site, but maybe not so good for humanity as a whole.