By the end of the read I was wondering why I can't setup a few vending machines, sit back and watch the profits roll in. I know it's likely more complicated that I imagine, but it seems like such a hands off way to manage commerce. It wraps up inventory management and sales into one convenient package and takes out the daily responsibilities.

I'd imagine that the property owner where you're placing the vending machine is going to want to cut, and probably some sort of rent payment and lease agreement signed.

I'd always heard, at least here in the Midwest US, that vending machines are run by organized crime (being historically cash-based) and vending routes and locations involve a certain amount of "protection". Maybe cashless vending machines are changing the landscape. Maybe it's all hokum.