We're not sharing risk, though, for all the rest of the drugs. If you look at public spending per capita on drugs, it's very closely related to provincial GDP per capita. The more money the provinces have, the more money they have to spend on drugs.
So unless you're looking at a national drug plan whereby the federal government assumes the responsibility, you have to look at mechanisms of equalizing the resources the different provinces have. Some provinces will reject drugs that are either expensive for small numbers of people or expensive overall because large numbers of people are going to be taking them for long periods of time; other provinces won't. There's no getting around that. P.E.I. cannot afford the same level of drug costs as Alberta can.
The federal government is either going to have to take over the whole shot, or the federal government is going to have to work out some kind of a cost-sharing agreement with the provinces so that the provinces can do better.