There are good and bad consulting companies. You have to pick the good ones.
Anyways, who asked you to work for desi consulting companies? Why don't you get a full-time job with an american company? The reason is you are unfit to find a sponsor. And blame consulting companies for retaining some portion of the hourly rate for bringing you to US. Or why don't you work for TCS, Wipro, Patni, Infosys they will not do any green cards and will not keep you in the U.S. for ever. These companies would send you to U.S., U.K., Australia, Singapore, Korea etc. for shorter periods and you cannot make a decision where you want to settle.
There are consulting companies that pay at par with or even more than these big firms and also start green card processing at your wish. You have control better control over your life.
As I said earlier, there are both good and bad consulting firms and they are like mushrooms. You just need to research, talk to people and find the reliable ones. The reason you hate them is you don't want to give them any margin and work for free. Noone works for free in this world, you should understand that. Only incapable people keep whining.
