I know where you are coming from (I used to have that view as well), but it is truly very limited in scope. That is, you are focusing in on a tree while missing the rest of the much larger forest.
While there are certainly rogues in every field - if you do not believe there are criminals & crooks in the green movement, you are willfully blind - the profits that businessmen amass come from the sales of things like iPhones & iTunes & Priuses & sandals & tv sets & all the things you & I want/use every day. Businessmen also provide services like making clean drinking water & building homes & repairing bicycles & fixing teeth that make our lives more comfortable. The most successful of these businessmen then purchase yachts & private jets & mansions, all of which give people like you & me jobs to design, build & maintain those yachts, jets & mansions.
Capitalism is based on the simple concept of trade - I have a good or service that is worth more to you than a handful of cash, so you trade the cash for my good or service & vice-versa. If the good or service I am offering is useful to a large number of people & I am skilled enough to market my good or service to make you aware that I exist, then, with a bit of luck, I stand to make alot of cash. You just need to produce a good or service that will have widespread use & find a way to spread the word so your potential buyers know you exist. And there is nothing stopping you from doing the same thing. That is why I believe that people who criticize others' success/wealth are either unaware or fooling themselves.