[hamaluik]

Plasma can be used outside of prophylactics as well, I don't think this is accounted for in the article (human plasma is used in cosmetics for example).

A lot of plasma is also separated out of whole-blood donations and manufactured into all sorts of things. I don't know all of the end-user financial ramifications of this, but hospitals absolutely do pay (sometimes quite a pretty penny depending on rarity of antigens and antibodies) for RBCs and platelets (and plasma) from suppliers like the American Red Cross.

Purely anecdotally, I have heard stories of some donors being compensated extremely handsomely for their regular donations because of the rarity of their blood attributes - even being flown across the country and wined and dined to obtain their blood on top of thousands of dollars per donation.