Comment by JoshTriplett

The model of "copyleft if your project is open, pay us if your project isn't open" is one where I have no problems or concerns, and will happily use the open version and recommend that people building something proprietary purchase a paid license. Nor will I typically worry about the motives or future of the project unless I have some other reason to. And the KDE Free Qt Foundation means I never have to worry about Qt going proprietary.