Think about the risk trade offs: Honest Bob’s VPN and Bait Shack is a niche business, probably an LLC or equivalent which can fail, leaving most of the assets untouchable, and the people behind it can just setup another shell company and start over.
Google, Amazon, etc. are huge businesses which get a ton of scrutiny by large business and government customers: if they get caught cheating, especially in a way which jeopardize customer data, they’ll lose orders of magnitude more money than any VPN user is worth and as a publicly traded company in the United States they’re going to have a much harder time avoiding legal consequences.
> and the people behind it can just setup another shell company
I think this may be true for the smaller ones, but not for the larger companies, like for example ProtonVpn. They would loose their entire business if they get caught "cheating".
> Google, Amazon... if they get caught cheating...
For example Google is getting caught with privacy violations constantly/on a regular basis. For example lately they were caught following Android devices even with Location Services turned off!