I don't blame you for having thinking that way. I use to think that way along with 99% of the people here. BUt then I realized a couple things...
1. The internet is huge, I would be lucky to have 2% of the internet see my ads. I don't have enough time in the day to cover the entire internet
so why not help other people. At least I can make 10% from places I am not advertising now and could never get to. So there isn't "creating competition" like you think. That would only happen if I said, hey I buy a banner on this site, on page2, and on this site, etc... I don't do that lol. That wouldn't help anyone (except the site owner) if 100 people started buying ads there, no one would make money from it. Thats not the point of my site. I help people make more money with clickcash by helping them advertise the site better. I provide custom content, promos, hosted sites, geo-targeted ads, i do site reviews, etc... and provide a lot of advice. I must be doing something right and I share that info with them to help them.
2. If i stop working I stop making money. pay for free signup makes the most money but I get paid up front. If i stop advertising, my check drops to very little money fast. By helping people with TeamClickcash I am building residual income. I am sure some of these guys will keep making money for years, so I will continue to be paid long term. Once my affiliate money replaces my advertising money, I could retire if i wanted to....
3. SOme people could make new accounts, but they wouldn't have access to everything i am offering. While I am sure this may happen, I don't see why it would matter much to them, the 10% has to go to someone, and at least I am helping them.