How could it not be cheaper- H1B applicants have to perform their jobs virtually under threat of deportation. How are they negotiating for regular raises or sto

How could it not be cheaper- H1B applicants have to perform their jobs virtually under threat of deportation. How are they negotiating for regular raises or stock refreshers in that situation? How often are they changing jobs due to poor working conditions or personal growth if their sponsorship could be jeopardized?