Earlier quoted context omitted.
Money is but one piece to ensure longevity. How many people even work at groups.io? What's their business continuity plans in case the founder or someone critical to the team dies, either due to old age or some sort of tragedy? Or becomes tired of running it? I'm not convinced it's preferable - people get old and tired of running a thing, or undergo some big life event that changes their priorities, and it's so tires…
Groups.io was founded by Mark Fletcher[0], who in '97 started the mailing list service that Yahoo! eventually bought and turned into their Groups product. They're about 10 years in and he posts weekly changelogs and updates[1]. Nonetheless, they're small and one might guess there's a high bus factor here. (Sorry Mark!) I think it's a toss up either way. I hadn't seen talk of Google Groups being internally significant…
You mean "he might get hit by a bus"? Surely businesses die more easily than people. Isn't a "high bus factor" kind of a good thing in this situation?