Thanks for the list!
One point I will add is that Startpage is actually owned by an American spamming company:
https://restoreprivacy.com/startpage-system1-privacy-one-group/
I used to use them a lot before the system1/Privacy One acquisition, but then decided to switch back to google (never liked DDG’s results, but might have to try them again).
I did have occasional issues with using a VPN and it was clear services were somewhat suspicious about me (very aggressive use of CAPTCHAs, additional login validation etc.).
That being said, outside of netflix (circumventing region-lock), I never had any issues with outright loosing access to tech oligopoly services.