¿OSS compiler availability? AVR has GCC open source compiler readily available, PIC has the free hitech C-lite what compiles without optimizations(horrid code)¿team members familiarity/expertise with AVR?
I think you have the timeframe a bit skewed. From the documentary, it seems it was more like "Arduino was chosen because it was there, and the Arduino project sort of grew up around it."
hadn't seen it, very interesting but it's too "marketing", i'd love a more technical explanation
[...] Whereas the PIC doesn't have this openness; it was one of the things that drove me from the BASIC Stamp to the Arduino (I could no longer compile my code under 64-bit).