It is not PC elitism, is common sense. It is more likely that PI would experiment with a new market by either exporting a game onto a new platform or publish another developer's game. Jumping into mobile market with a major IP (which entails an expected success and thus a larger investment of resources and expected DLC&sequels) is way too risky, not to mention that their ENTIRE fanbase are PC players and that history has proved that mobile players DO NOT have the same tastes as the PC and console players do, thus making the whole thing even riskier.
Also, if it were a mobile game, that would most likely be one of first three hints.