A related idea would be how profitable these ATMs are, and whether or not there are onerous regulations ("Know Your Customer", etc.) on Bitcoin ATMs.
If these ATMs are making money (and I read today that an ATM in London did some 38,000 British Pounds of business), that might jump-start entrepreneurial interest.
Here are some things to help you on your way if you start down the entrepreneurial path.
Bitcoin ATM comparisons
http://bitcoinatmsales.com/#compareA jump start into US Bitcoin ATM regulations.
http://blog.atlantabitcoin.com/us-bitcoin-atm-regulation-101/