Good luck getting any serious technical support with Qt. At least with HTML5 there's a huge amount of users and technical resources. I was never able to get answers to any technical questions that weren't trivial.
Even setting aside the argument that, sure, it'd be nice if people paid one another for good work... that's just a hellaciously slow turnaround time. The greater mindshare in the web ecosystem makes dodging a bunch of issues much easier.
I would expect that they would know everything about qt.