I dont believe there are any arcade rentals being done in arcade, and if there were, it would be outrageously priced to the point of not even wanting to bother with it.
Straight up, I can tell you for fact that neither Edison Bros., nor Namco (after the acquirement), rented their games.
Again, video games are a long term investment.
The problem is, that most games are too casual (Baby Easy) to keep people coming back for more. Add to that console ports coming too quickly, and the Ops are pretty much screwed.
Furthermore, Someone has to pay the $7000 to $50k. Weather it be an Arcade, An outside Op, or some rental company. Namco sure isnt renting their latest games directly!