> you want people to know your platform when they're done studying, so they can advocate for it in their jobs. Why would you destroy this revenue stream?

That was how Adobe ran for a looooong time, up until and including CS6. They didn't give a f..k about piracy beyond something that could trivially be circumvented by a keygen and a few well-placed /etc/hosts entries, and that was what made them the utterly dominant power in anything creative - people were used to years of working with Photoshop (a friend of mine started with photography at age 13!), and so they demanded from employers that they use Photoshop. Incidentally, that also was what kept Apple afloat before the iPod/iPhone days - Adobe stuff just worked fine on Apple hardware but was a nightmare on Windows, so people also demanded Macs for their work.

The advent of CC came once Adobe had achieved that lock-in and started milking its customers for all they were worth, and additionally they opened up a load of legitimate customers as well who didn't feel like dropping a few grand on Adobe stuff but who cares about 50$ a month?