Yes, I understand that. But the same variation in resources holds true for eg. Google Maps vs OpenStreetMaps, yet OSM is still sometimes much better than GMaps

Yes, I understand that. But the same variation in resources holds true for eg. Google Maps vs OpenStreetMaps, yet OSM is still sometimes much better than GMaps. And Google also crowdsources their data even with all the resources at their disposal. Whether there'd be a critical mass depends on a lot of factors, and it's a safe bet that there wouldn't be one. But I would wish us to try :) FWIW, there would huge commercial interests for other parties to provide these, eg all the taxi and delivery services could have their drivers participate, while allowing their app developers to integrate that traffic information into their own route estimations and optimizations.