MS pulled some shady shit, no doubt about it, but I don't think MS has ever been the serious threat to freedom that other companies have. The PC has always been an incredibly open platform. That openness was taken advantage of by many competing operating systems, especially linux, over the years. And remember that the "PC" in this case extends to the server market as well. It's always been possible to build PCs from parts and put whatever OS you wanted on them, and MS has always been a part of that phenomenon while Apple and other companies preferred much more closed ecosystems. We should remember that, and give credit where it's due.