[ben_w]

I think that's more a problem with being famous: the top of the Wikipedia list* as I write this is "Bernard Arnault & family", who I've never heard of and therefore couldn't spot in a lineup much less a crowd.

But I did double-take when walking past Russell T Davis (or a lookalike) in Sheffield a decade and a half ago, and Richard Osman in Cambridge train station some other time.

* https://en.wikipedia.org/wiki/The_World's_Billionaires

[shiroiushi]

That's why I said "if". Some billionaires are not well-known publicly, and then there's Elon Musk or Bill Gates.

[ben_w]

Indeed, though I think he likes it that way, and that it's a choice.