Maybe it's because I'm used to US Television where you have a six year contract and do 22-26 episodes a season (series for you UK people). CE did 13 episodes, and you can deny this if you want, but he became famous world wide because of it.
He was already a celebrity, having appeared in lots of TV shows and movies. Matt Smith is the only New Who Doctor that wasn't already famous before casting.
I don't feel like Chris owes me anything. I'm still a huge Gary Numan fan, and he was weirdly rude to me when I encountered him last year. I don't feel like I'm owed anything by these people.