"Little inherently wrong"? How about the incredibly limited control scheme?
An inconvenience, I agree, but it's not an insurmountable obstacle.
Mobile OS's support Bluetooth controllers, purchasing just 1 peripheral could do away with this obstacle.
I'm going to assume that you never played on a GameBoy, GameBoy Advance, DS, 3DS or Switch.
Although it's a personal preference issue, I'm confident that there are enough different screen sizes in the mobile space to accommodate most people; from 6 inch phones to 10+ inch tablets. Sure, there will always be outliers, but for the majority I don't see this being much of a problem.
the controlled closed source market?
Not much of a problem for the current market, seeing how consoles are doing just fine and have been for decades.
But if you really care about open source and all that, one could always create one's own market on Android and publish as many open sourced games as one likes on it.
the amount of "free to play" games requiring cash to proceed, or straight up micro-transactions?
Although a nasty popular practice, this isn't an inherent element of the mobile platform.
Not to mention all the personal data you are being unwittingly stolen on, or apathetically don't care about?
There isn't much personal data that could be stolen through gaming that isn't already being stolen by normal phone or tablet use. Large portions of humanity use mobile devices without caring about this, I doubt that it would stand in the way of gaming on mobile platforms.