Even if all his patrons are from the local Ladies Auxiliary Hall, he's still going to be subjecting his "fully-restored arcade classics" to lots of normal wear and tear (meaning they will no longer be in "fully-restored" condition soon enough), with no return to show for it. Even if people aren't playing them constantly, just having them on, ready to play, is going to cause a lot of screen burn as well as wear and tear on the other electronics, not to mention the amount of electricty he will be using.
It would kind of be like having a restored classic car collection and then allowing free rentals, and paying for their gas to boot.