Nice share, I haven't myself seen a moneychanger (that's what I call them haha) do that, but it's been something I used to say years ago (to see BTC on moneychanger boards). All of them need big spreads though, it's how they make money.
Just to say, though, you can have the same experience doing p2p trading -- usually with better spreads. Many p2p traders I know have listings on public platforms but then later on are happy to do direct with you.
Yep. P2P became the most used option for such activity, imo.
Machines will be there too, but they may be with KYC built to them sometimes, sometimes - it can be done without them..