Although we see it flourishing all over the place, I don't think it's a viable project in the long term. Only in the short/medium term.

Because with the accessibility we will have to buy/sell bitcoins for the mass, we will no longer need this type of machine. Especially when you pay a premium price compared to the rest of the methods. With time, it will become so easy that the average Joe won't bother to visit a BTC Atm.

Not to mention that some countries could, despite legal status, act in the same way as Germany did a few weeks ago when the country decided to ban the machines on their territory if they don't have an approval from a financial regulator.

This adds a 'not to be neglected' problem to open a business in this niche.