Not only are the salary bands meaninglessly wide, but I'd bet that if someone was really great and justified more than the upper bound, the company (Microsoft, but any other rational company too) would, of course, pay that higher amount since it's in their interest to do so.
They are not meaninglessly wide. These laws are of great benefit to those earning the least in society. They get to easily see which occupations and businesses pay more and where their labor should be allocated.
