How many of my channel partners should I expect to use the platform?

All of them. Anyone who is not using the platform is simply not fulfilling the definition of a channel partner. You are investing in the partnership and, as such, in them. You have the right to expect them to abide by your partnership guidelines. Your PRM is the vehicle through which you share resources with them and they keep you appraised of their progress. If they won’t use it, it will cost you too much to have someone constantly gathering all that information for you. Channel partners will be very demanding of you if they’re doing their job right. Be demanding with them in return and they will respect you. Otherwise, cut them from your program.