I think dominant players also have the cash and muscle to buy off or scare off upcoming rivals. Look at what microsoft did, with all the antitrust stuff. Look at EABL and Castle.
Well,Nation tried to shake off Nairobi Star with the Daily Metro, but failed.
However as an upcoming guys you need shock absorbers (or deep pockets) to survive the onslaught once they start getting @ you. As an invetsor, though, you just put your money on the dominant player!
Form is temporary, class is permanent