Professional jealousy is a a tremendous motivator. I once received a bar greivance from another lawyer for a telephone book ad. The guy was a total moron, basically whining about how guys like me get all the business in "the recent future" (whatever the Hell that was). Thankfully, it was dismissed without merit.
You just cannot imagine how people take shots at you when they think you are on top. Their energy would be better spent trying to improve themselves.
I'm sure that could have been a motivator for some of the people, but 26 people gave evidence against lance, including 11 teammates. That is a lot of jealousy. The other thing about it is that some of the guys who testified were always on Lance's good side. George Hincapie was retiring anyway, never seemingly crossed lance and has always been respected as a great teammate. He also has a very successful line of clothing, so he isn't hurting for money or attention.