WoW distribution model and saving bandwidth costs

Freeware developers who need money, shouldn't pay for bandwidth of distributing their product. Especially when they are popular. Not all of us are in a position to donate money but all of us have internet connections. I would be willing to have my bandwidth used by open source and freeware developers to distribute their updates or executables. What it does allow me to do, as a fan of open source, is be more of fan and be apart of supporting this community. Something I am not particularly a fan of World of Warcraft (its a video game that requires a lot time I am not willing to give up) already does this with their users.