Is your beef that unscrupulous consulting companies might try to back charge the $10K is actually costs to sponsor an H1B candidate or is your complaint that you feel American employers are willing to pay a premium for H1B consultants rather than higher a full time employee?
I don't believe a company in the US could directly sponsor an H1B employee if there were qualified permanent residents who could fill the position. I'm sure some less ethical lawyering might make that possible but I believe it would be in violation of the rules.