I'm not so sure that this "If we build it, they will come" strategy is going to accomplish much. Commercial developers aren't going to waste time on a platform with a path to the consumer that is speculative at best.
Open source developers may love it, but the first thing they're going to do is replace Trolltech's Qtopia with something else (OPIE or GPE) or spend all their time hacking in the kernel, not the application space. Not that there's anything wrong with that, it just doesn't help Trolltech with their goal of getting consumer friendly apps developed for the phone.
In the US, consumers in general don't even want smartphones. Of the few that do, most want little more than seamless desktop (Windows Outlook) integration, a good set of built-in PIM apps, and possibly Blackberry style email connectivity. Even with Windows Mobile devices (which are, for the most part, not crippled by the carriers), the fraction of users that ever install an app that didn't come bundled with the phone is surprisingly small. Now stir into that mix the schizophrenic (and corrupt) wireless carriers and it's pretty clear that smartphones will never be more than a tiny niche on this side of the pond.
I wish Trolltech luck. I'd really like to see Linux phones succeed, but my expectations are pretty low.
