which people are in charge and control over Unity? are those the same people that decide to use it in different versions of Ubuntu?
Unity is a Canonical product. Canonical controls both Ubuntu and Unity.
UPDATE (after tumbleweed's comment):
"Canonical controls Ubuntu" (1) vs. "Canonical does not control Ubuntu development" (2).
Well, truth(tm) is probably somewhere in the middle. It's worth to mention about the Ubuntu Fundation which was founded by Mark to make Ubuntu more Canonical independent.
Anyhow, Ubuntu will probably never be as community controlled as Debian is,
but I don't think it's bad. I think what Mark and Canonical do is really good.
IMHO, Mark should get a Nobel prize for his attitude and accomplishments for the human race.
