No, you don't, IFF you distribute the source code. Doesn't make
a lot of sense though. So consider, a for-profit company licenses
QT for a proprietary app. They send bug fixes/enhancements to QT
to TrollTech. If these migrate to Free QT, you're ahead of the game.
If they don't, what did you lose?
> Which makes no sense. You're not at the mercy of Linus or the
> kernel developers, neither at that of the KDE developers, but
> TrollTech controls the KDE desktop wrt commercial apps.
No, they don't. KDE uses the GPL for QT. If I build a commercial
app using KDE, it is GPL. If I build a commercial app not using
KDE, but using commercial QT, that has no effect on the KDE desktop.
> What if TrollTech decides to only license (or sell) Qt
> to, say, Microsoft? What does that mean for, say, the Kompany ?
They can't. They released the code under GPL. They can stop maintaining
that code, and continue on a proprietary track. If they did, what
did you lose?
In summary, QT -> GPL, GNOME - GPL, what about _that_ makes one or
the other inherently preferable or better?
P.S. for once I am in complete agreement with larry m. ;-)
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