The thing with coin-ops, and arcades in general, is that you still had to physically go somewhere, and have the coins to keep playing. If you walked away, someone would take the machine. Worst case scenario, the machine stopped working when it ran out of coin/token space.

I’m not denying that there are similarities, and that ultimately every game ever has been built on a fundamental mechanic of risk/reward, but it was rudimentary and broadly speaking deterministic and visible to the user (you knew how to get a free ball in most pinball games, for example).

The combination of easy payments, of very high amounts, and online competitive play where the high rollers can be multi-millionaires from anywhere in the world, and a pay-to-win mechanic makes certain modern games not just addictive, but financially crippling, if played by someone susceptible to addiction.