The average case isn't google, though, it's... well, some company which winds up going under or if really lucky maybe getting acquired and either way vanishes off the radar.

And heck, even if you had, would it be that life-changing? It'd be a moderately interesting cocktail party anecdote at best. And I say that as someone who is interested in this kind of stuff. For everyone else it'd probably be a fairly boring cocktail party anecdote.

Visiting a couple of guys in a small office really isn't that intrinsically exciting.