The vast majority of tailnets are just hobbyists on the generous free tier and probably don't use tailscale ssh, but rather ssh over a tailnet. Usually it's either just one person or a family sharing access to the tailnet. But for corporate accounts where ACLs are used for SSH yeah this is big.
I'd be fascinated to see numbers on whether your assumptions here are correct in terms of the ratio between hobbyists using Tailscale on their home network and actual paying customers using it for more serious purposes. Does that change if you look at user counts rather than networks?
My gut feel is that you're correct but presumably they do have a decent number of proper corporate customers or none of these features would exist in the first place.
