Seconded. Also, the KDE Free Qt Foundation [1] has slowly extended the reach of their Agreement to include all versions of Qt across all platforms, including most additional modules maintained by Qt Company.
[1] The KDE Free Qt Foundation maintains a legal contract between KDE e.V. and the owners of Qt that mandates that, should Qt not see a new release for longer than 12 months, the last version of Qt be re-licensed under a permissive BSD-style license.
It's dual licensed and it is rather prominent everywhere on their webpage that it is a dual licensed Open Sourced / Commercial project. I have found Qt to be very Open/Free friendly, unless you have other evidence to prove other wise?
If your referring to the commercial aspect I'm not sure since I only use the LGPL license.