Perhaps it has something to do with the institutionalized abuse of the immigration system in order to import workers who are paid less and are far less likely to leave or demand higher wages.
The idea that there is a STEM shortage is a bonafide myth. Remember that we're talking about the same industry that perpetuated the largest wage fixing cartel in human history.
It's amazing how many people around here just can't wrap their heads around the fact that increased labor supply means lower wages. You only have to listen to a handful of earnings calls with giant corporations talking with glee about how elastic the labor markets are, and how that will be a huge boon to their earnings.
Is the reason there are so many immigrants in IT because the job doesn't pay well enough?