[–] SkepticalMartian 1 point 1 point 2 points (+2|-1) ago (edited ago)
I literally did read your comment, it's basically saying "the problem is that the platform has hardware constraints and nobody uses keyboard or mouse support (when provided)".
The hardware problems in terms of machine power are imaginary. The lack of keyboard and (when available) mouse support can be blamed on game developers. Unless it's some high end sim if it wasn't ported it was because the developer couldn't be bothered to do it.
The bottom line is that PC exclusives are not "prevented" from being ported in the vast majority of cases.