It may be worth the money if HTC wants more exposure
I would an exposure explosion - not a bad thing for HTC IMHO. It would be just a way to allow for easier game updates, installations, and outsourcing the payment methods. They would loose revenue money using Steam, but the client base would increase 10-fold.
Besides, don't we all want more 'squeakers' to shoot down? I also enjoy their ranting text messages on the noob channel that always go unanswered until they PO another squeaker who thinks they're talking to them. That gets funny in a hurry.
Furthermore, with an increased player and subscription base, they could add more coaders and programors, and maybe hire a Skuzzy junior assistant nicknamed Squeaky. And with more coaders, it means more aircraft and vehicles and updates more often - and that's not a bad thing.