Re: Utter rubbish.
"Third, Microsoft played dirty, and for the non 'for Windows' (fullpack) versions of OS/2, IBM was paying MS a Windows license cost for each copy of OS/2 sold."
That wasn't MS playing dirty, it was IBM lawyers not doing their job properly. They also didn't do their job properly when they signed the contract for MS to supply them with DOS.
MS put in a clause which said that IBM had to pay MS a license fee for every processor sold. Not every processor sold which was capable of running DOS, but every processor that IBM sold. Mainframes, RISC machines, the while lot.