The RPi FAQ says:
Can you test it to make sure that it is suitable for <X>?
If you want to use it for something that we haven’t tested, and that it’s not intended for (i.e. anything but the educational work we’re planning for it), then that development work is up to you.
Although they realize that inexpensive computers will be used for more than just
education, and they don't discourage that, they want to be sure that you know that
they're an educational charity and they don't want you asking them to do any work
that falls outside the scope of that mission.
But then we see a press release from Collabora that appears to indicate that
non-educational use cases such as advanced multimedia playback, complex digital signage,
and set-top boxes, are driving the RPF's recent improvements to the VideoCore firmware:
While collaborating with the Raspberry Pi foundation, improvements to the VideoCore firmware were made by the foundation to further the performance and stability of the Raspberry Pi. Despite the full-featured drivers for X11, it wasn't previously possible to meet the requirements of certain use cases such as advanced multimedia playback, complex digital signage or set-top boxes.
