Ahhh you don't understand, TIR are encrypting the hooks into their system so new games coming out will NOT support systems such as freetrack. Don't believe me? Get arma2, it won't work with anything but a real TIR system (there is however some unofficial patches).
Vulcan, that may well be true, I'm aware of Natural Point's seemingly anti-competitive moves, and that certain games don't support FT any longer (ArmA2, Black Shark, etc.). For folk who play a variety of games, including those above, that's a valid consideration. I'd suggest visiting the Freetrack forums to see the latest on that issue and the fixes for it.
Currently, however, I'm only have time to play Aces High and it's been the focus of my comments all along. What you describe seems predicated on a given game development company agreeing to only support TIR as a company decision. Thus, in the case of Aces High, it would seem to me that HTC would have to agree to only support TIR to the exclusion of other systems. Unless there is some contractual agreement between NP and HTC which specifically enjoins HTC from supporting other view-tracking system, I don't see why HTC would agree to it. Not saying it's not possible that it won't happen, but what would they gain?
Currently, there may be several, perhaps many, players using FT in AH who would be put out by such a move; HTC wouldn't benefit by only supporting TIR (again, contracts between the two notwithstanding). Thus, this isn't an issue for FT users in Aces High (which again is the only game I happen to care about at the moment), at least in the near term.
FWIW