In a previous message, I said

    > The problem is that "free for non-commercial use" is not enough--it is
    > not free software.  Free software should not be limited to hobbyists
    > and students alone.  It should be for everyone, for all legitimate
    > activities including business.

Actually, Qt is not "free for non-commercial use"--at least, not in
the sense of free software.  Free software includes the freedom to
release modified versions, and Qt does not allow that for either
commercial or non-commercial users.

The English word "free" is very flexible, and you can find ways of
using it that will fit Qt.  But that won't change the usage
restrictions on Qt--it won't make Qt free enough to be free software.

Please see http://www.gnu.org/philosophy/free-sw.html
for an explanation of the freedoms that free software refers to.