They'd hire these kids in and put them to work on their legacy monstrosity, expected 50 hour work weeks, mediocre benefits, and mediocre pay. The result was a lot of really talented people literally wasting years and not advancing their skills, and not getting to use any current, marketable technology. It was also a highly toxic environment as these same capable people crucified each other in code reviews and one-up-man-ship.
Obviously google must not be quiet that bad, but I'm also sure they have a lot of really talented people wasting their abilities on internal CRUD apps.