While that may be technically true the overlap between phone games and console/PC games is no minute as to make them effectively two seperate markets. At its best phone gaming conists of people running DOS box on their phone and playing DOOM with a bluetooth mouse, at its worst phone gaming is a bunch of shovel ware gache trash appealing to the lowest common denominator.
The reason why phone gaming will never take over the computer/console market is because it is just absolutely filled with shit, also phone are just too underpowered and clunky when it comes to controls.