I've attempted purchasing paid-for alternatives to all of the Google services, and so far they haven't stuck. But yeah, if I could get the advantages implied in being a paying customer (privacy, customer support, UI updates that aren't geared towards their ad business), I would.
Having just moved to Youtube premium... fuck yes. Get rid of this advertising bullshit in gmail, please. Let me pay your server costs (tiny at their huge scale) plus a small premium to continue to fight bugs and improvements.
Yes, yes yes. Yes.
Oh, wait. REQUIRED. No, then. If it was an option then yes. Required no. Not at all.