I can remember, when "Progress" - for all who believe this is a" hoover": this is a (very good !) database and integrated application software - started many years ago they give away the free version to schools and students.
And all outcoming MBA and students have known very well the software and the database. Years later in Business they decided (before any evaluation for a new Database ) to give progress a chance.
And Progress as a company had a very good business and start-up - growing to a big business in IT.
Some years ago a CEO decided to stop these "free" licenses for students and the schools and universities (without any real needs - they had not lost money) and after 3-4 years there were no longer new students and managers outcoming from universities knowing progress.
They "new" managers and business people do not know progress anymore.
Only "insider" and "old" users use this database and software today.
Would be interesting - are there people knowing it?
I think - wikidot made the best decision to give away a kind of "free" for educational sites. - this is the best practice to learn young people what is possible and what they can use later for their own private or business life.