Large companies only care profit. They will hand over your privacy/security in a blank of an eye if to not do so costs them. Snowdon showed companies hand stuff to governments. I doubt it's changed. They are heart money machines remember.

Least governments are in theory democratically accountable. Having to trust someone at all is really a problem with CAs. Maybe you want different CAs you can choose from. I'd trust one from nonprofit FOSS groups like Debian more than big tech or governments to be honest.