When new OEM PCs comes with Linux pre-installed is when stuff happens. Not before then. Windows 11 adoption will be slow cause of their exclusion of old hardware. That old hardware will be scrapped or people just keep Windows 10 on it, regardless of security warnings.
The Desktop Linux experience, with gaming and all, seems pretty close to fulfilling everyone needs at this point. But it would not surprise me if Microsoft goes around paying OEM manufacturers to not bundle anything but windows with their products.
To me Blue Shift and Opposing Force were both fun experiences. Played all games several times. They provided more Half-Life when the craving after finishing the main game had not been satiated.