He made a big show about free speech and he got slated for it.
No one is going to try that again.
I’m not sure what you aren’t getting. Did Musk talk a lot about free speech? Yes. Did he do things that were pro free speech? Yes. Did he get slated by a lot of people for both those two points? Yes. So why would anyone or any business try the free speech again?
All that above is an argument in isolation. I don’t see why that wouldn’t hold as a solid justification that free speech wouldn’t be tried again. What is confusing in that?
Has Musk done non free speech things? Yes. Was there a big outcry about it and people saying that is around and free speech is a goal? No, not really. People use it as a lolz got you thing. But as a fundamental argument of people copying that, people are for it. His lack of free speech has been seen as a good thing.