This is not really true: the main limiting factor with H1-B visas is the yearly cap; as others have said, the rest of the requirements are normally easy to chec

This is not really true: the main limiting factor with H1-B visas is the yearly cap; as others have said, the rest of the requirements are normally easy to check off (especially if you already have an H1-B). Since you are not subject to the H1-B cap when reapplying if you are already on an H1-B, and since there is so much demand for tech jobs, it's not clear that H1-B tech workers have to be loyal to their employer.