Comment by ghaff
People (and their companies in many cases) have limited budgets. I do pay out of my pocket for some conferences, and conference organizers and (previously) employers in other cases. You're probably not going to convince me that I'm better off sitting at a desk than getting out and collaborating with people at an event from time to time. For that matter, why should companies sponsor open source projects? If they're that valuable, individuals should just pay for them I guess.
And you’re not going to convince me that collaboration is so valuable that it’s worth corrupting the whole medical establishment, and simultaneously not valuable enough for you to pay what it costs to do it.