Good point, except that Qt licensing has never bought in very big money to Nokia or Trolltech before it, especially after they changed the license from GPL to LGPL. I think Qt's being strategic lies in their being part of Nokia platforms.
On the other hand, Digia has been doing a lot of Qt work for Nokia, so it's good news for their developers.
Trolltech's total revenue is around €25 million. Total losses were around €6 million for the last couple of years. Total cash on hand at this point is around €13 million. They've got around 250 employees worldwide.
No info, though, on how this was split between licensing and other professional services.
Consider how Digia used to make money (taken from Qt's blog on this news item)
Employing hundreds of Qt experts, Digia has 7 years experience in providing top-class Qt competence, and is dedicated to continue and grow Qt Commercial relationships as well as to contribute innovation to the overall Qt LGPL and commercial community.
On the other hand, Digia has been doing a lot of Qt work for Nokia, so it's good news for their developers.