I am quite a heavy user of wxWidgets, partly because of licensing reasons.
For those of us who are drawn to wxWidgets because it is the cross-platform library that uses native controls for proper look and feel the licensing change of Qt has little to no consequences.
Edit:
Regarding
Qt not having native controls but native drawing functions
let me quote the wxWidgets wiki page comparing toolkits:
Qt doesn't have true native ports like wxWidgets does. What we mean by this is that even though Qt draws them quite realistically, Qt draws its own widgets on each platform. It's worth mentioning though that Qt comes with special styles for Mac OS X and Windows XP and Vista that use native APIs (Appearance Manager on Mac OS X, UxTheme on Windows XP) for drawing standard widget primitives (e.g. scrollbars or buttons) exactly like any native application. Event handling, the resulting visual feedback and widget layout are always implemented by Qt.