If I may be frank, I think you may be overestimating the people who'd want a firstname@lastname.com address?

That's been easy for anyone to get if they were willing to pay and spend a few minutes of research. Most people just don't care.

Even if you spent the money on a Gsuite user for every person, you probably wouldn't get more than a tiny handful of users, and most of those would probably stop using it once the novelty wears off.

Are you sure this is even a problem worth solving? What about just inviting those closest to you and asking if they'd want to pay you a few bucks a year for a special email address? Probably it won't be worth the trouble for either of you, realistically.