Probably.
The big companies like google, amazon , etc actually pay H1B visa holders good pay ($130k+) so they will be able to get more slots for those visas.
The bum ass companies like accenture who try to bring senior developers here and pay them $40k won't be able to get any visas granted and may take a L. Whether or not that means they will starting paying a citizen a fair salary or not is to be seen i guess. They could just say fukk getting visas and just try to package offshore teams to their clients