If computers were invented by the Silicon Valley of the 2020s, this would absolutely be the case.

To be fair, many early computers were tied to the OS.

But they didn't have technology yet to do it properly, so it was trivial for people to sever the tie and install alternative OSes - trivial enough that it was also easy to teach others how to do it.

Now, the tech to make that tie near-unbreakable exists.