I could be wrong but the impression I got is that the machines are not available for personal use. I'm not sure that the diners and so forth even own the machines - they may be rented or leased or something like that. I had the impression that the profits were split between the diner owners and whatever company the machines come from. I could be wrong though.

There's an anecdote about a gambler who worked at a slot machine factory to try to demystify them (it didn't work) and learned to build them, but the one thing she was never able to understand was the chip that contains the actual game data. She was never allowed to access that, as it's proprietary.

It's possible that an individual could buy or lease a machine, but I don't think the makers would allow them to be generally available in a non-commercial manner.