Worldwide billions are spent by public education systems of different countries on microsoft office entrenching their future workforce into using microsoft products. Google was actually able to break microsoft cycle over the last decade but it is one proprietary system over another.

And before that, Apple got a generation hooked on iMacs by making the colorful pear-shaped all-in-one CRT computers the standard in every school.

Education is a prime target for rent-seekers for two reasons. First, you can use the same product and marketing on thousands of schools. Second, your marks are young and impressionable.