Not sure which way to interpret that:
are the mobile games wasted potential? Or are the people making them wasting their potential there?
For the latter I'd probably Agree, given how simplistic mobile games generally tend to be.
For the former... I mean, would the game simply being on another platform make it better? Mobile games tend to be designed a certain way, so I doubt it.
Also mobile games are a great time waster for children, which will click on in-game purchases so you can scam their parents out of money! That's a win-win! =D