Which is why the US doesn't need Trump (don't get me wrong hes the best we got right now), it really needs Theodore Roosevelt 2, some one willing to trust bust and break up the megacorps to bring compititon back in to the US Market, If Facebook/Google/Apple/MS/et al wasn't able to buy out and/or other wise destroy any competition that may keep up, Facebook et al would be more neutral in terms of applying the rules equally or people would jump to new platforms al la Friendster -> MySpace -> Facebook -> Current stagination of the internet.
Yeah, the government protections that a lot of the big tech companies get are absurd and push out most competitors, but even so - even if you broke them up and fractured them, you've still got an industry whose labor and design staff are going to generally be fairly hostile to conservative positions.
It would make it easier for a conservative-focused rival to find their footing than at current, though I really think at the moment the problem is more a blend of people being unwilling to move to somewhere smaller + conservatives for whatever reason constantly trying at this "a place for
everyone" idea and never really coordinating as a result.
The Silicon Valley companies squash their own employees dissent too. There is a significant number of people working at Silicon Valley companies who are not radical leftists, especially companies that have teams that are remote and thus not based in SF. But much like general society, a fringe group of 15-20% + the leadership who want to virtue signal dictate the company culture for everyone else.
There are a number of libertarians that flock to the field, as well as milquetoast democrats closer to JFK-style values. But, aye, they're rarely the sort to climb positions of HR power. They're rarely the sort to, say, send out a company email suggesting that office workers take down any material that might be seen as "misgoynistic" to some visiting high school students in an outreach program, such as
Star Trek posters. It was definitely not made fun of by the vast majority of the office for how ridiculous and out of touch it was, and they definitely didn't send an unprofessional, bitchy follow-up indirectly whinging that people weren't taking them seriously.
But these are rich, privileged people that come from power and whose every waking effort is bent towards domineering and acquiring more authority for themselves. Within the confines of a corporate structure that protects them, surrounded by people who generally lean in their direction, there's not really anything you can do to purge them from the rolls. Which is hugely why I don't think any efforts to get the companies to moderate themselves will ever go anywhere - they're never going to rebuke these sacred cows.