Plus he forgot IBM OS/2 and how Microsoft stabbed them in the back. Look up the DOJ investigation of Microsoft to see the violations. Microsoft used to bundle Windows with Office for OEMs and force Internet Explorer to be the default web browser. Microsoft stopped offering free Office OEM licenses and now installs a trial of Office and the user has to pay for a key to Office or a Microsoft 365 subscription. You didn't get that nonsense in IBM OS/2 or GNU/Linux.