For some reason, they have men by the "short and curlies" as we say in the UK- i.e. by the balls. We won't complain or form any kind of alliance against the medical profession, Big Pharma etc, because we are too embarrassed by our illness. Can you think of any man who has appeared on TV saying that they use erection products? Well I do remember Hugh Heffner saying he uses Viagra, but then he was in his 80's when he said that! The words greedy and bastard spring to mind
Interestingly you mention Canada and Viagra. We have been getting spam e-mail for years from "Canadian Pharmacy". There doesn't seem to be a British spamming equivalent.
The other point I keep banging on about here, is do we really need pharmaceuticals anyway. If you could reverse the damage to your endothelial membranes and so on, would we want Viagra? At the moment if we don't press for those kinds of medical intervention we are just supporting an unsatisfactory fudge of the issue.
For me what we have at the moment is a palliative treatment, which is unsatisfactory to begin with, but then to have it rationed! That's taking the piss as we say in the UK.