If o positive blood is so common why does the Red Cross need it so bad?

I know its the universal doner.If o positive blood is so common why does the Red Cross need it so bad?
The red cross sells blood they collect to hospitals and/or doctors for use in elective surgery (surgery that is not the result of a medical emergency).
Most surgical procedures require the use of plasma (to replace the blood lost during the surgery) or even whole blood.
Surgeons will rarely ask their patients to donate their own blood for use during subsequent elective surgical procedures. Rather, they rely on the Red Cross (and other companies) to supply them with the blood they need.
The Red Cross encourages people to donate blood by insinuating that the blood is used in emergency situations and that, by donating, you are "saving lives". However, the truth of the matter is that, except in emergency cases of trauma, the blood is used by patients who could just as easily have donated their own blood a month or two before their elective surgery.
Therefore, as long as there are elective surgeries, such as cosmetic surgery, knee replacements, etc., O-positive plasma is always in demand.
The Red Cross is in need of o postitive, because it can be used and accepted by any blood type.
Because they can sub it for other types.
Not enough people donate. People donate with other blood types and those blood types are used first. A hospital will run out and the o+ blood is next.
I am O+ and if I was in better health; I'd donate.
Rejoice as Danish researchers have perfected an inexpensive and efficient way to convert types A, B, and AB blood into type O blood. This breakthrough promises to make transfusions safer and relieve shortages of type O blood.

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