They didn't, but the idea behind arcade cabinets is that without continuing to feed in money you got an incomplete experience.
The issues you're bringing up -- and is valid -- is a fair number of free to play games may instead give you a sub-par experience (unless you pay money, you have to wait) unless you feed in money.
The issues you're bringing up -- and is valid -- is a fair number of free to play games may instead give you a sub-par experience (unless you pay money, you have to wait) unless you feed in money.