Microsoft was and is always a monopolistic business. They started by buying the original DOS from the guy who wrote it for a pittance and sold it to IBM for a fortune. After that they developed the first few mac applications and used the technology to develop windows. They took money from IBM to develop OS/2 and developed Windows 95 instead and never really finished OS/2. They copied Stacker outright a disk compression software. They squeezed lotus l, word perfect, dbase, novell, and almost Apple, completely out of the market. Now Bill Gates is admired by liberal teachers all over the world.
OS/2 was a joint venture between IMB and microsoft, that is why OS/2 can not be open sourced, because of the microsoft license’s, IMB finished OS/2 and released it. gates used the IBM venture to do windows NT. OS/2 does a better win/dos.
I use OS/2 today!! its still marketed today
And Apple isn't???