The main appeal of H1B abuse is cost effectiveness. If you ruin that by forcing competitive salaries (to even get the H1B in the first place), then that ruins the whole point (and companies are going to engage less in it, i.e. only when needed/"intended").
There is also a huge difference between dealing with a consultancy agency that you suspect engages in "creative visa workarounds" and straight up comitting fraud (=> higher risk, possibly even personal, makes for a much stronger incentive).
I know a scheme here in Switzerland where the company also provides lodging and services and such, for a cost of course, which cost is then deducted from the big salary thus bringing it to much lower and better palatable levels ("better" for the company doing the tricks of course). It works quite fine in IT because IT is not a protected domain, and much more difficult (not impossible though) in areas like construction - where you have unions and collective agreements.
The main appeal of H1B abuse is cost effectiveness. If you ruin that by forcing competitive salaries (to even get the H1B in the first place), then that ruins the whole point (and companies are going to engage less in it, i.e. only when needed/"intended").
There is also a huge difference between dealing with a consultancy agency that you suspect engages in "creative visa workarounds" and straight up comitting fraud (=> higher risk, possibly even personal, makes for a much stronger incentive).