Official partial ownership would be great, but if that is not possible the company could assume full ownership of the ATMs and the profit could be distributed to the investors behind the scenes as was suggested somewhere earlier in this thread. That way you couldn't possibly run into any obstructing regulations and such, right? (I don't have any clue about financial/business law, so forgive me if this suggestion isn't of any help).
I'm pretty sure this would result in the ATM's being seized and any hope of getting our money back would vanish. While this works for ASICMiner, that's only because they're mining and are only selling mining equipment (although that may change in the future). Here the company has to abide by a whole different set of laws that are very strict (Know Your Customer/money laundering laws). However, I'm hoping that I'm wrong and you're right.