Perhaps. I can tell you I have no interest in doing it. Doing the autorouting with some form of vector data that's readily available is interesting. I have free vector data. Someone who cares could perhaps arrange to translate proprietary format data into a common free format.

I'd pay to get such data, sure, but I have no interest in developing for it. In fact it's not even interesting until we have a way to deal with any data, why try to do 2 hard things all at the same time (get right rendering of a map and routing on it, *and* using a proprietary format)?