I wish it was the year of Linux, and they get 90%+ market share overnight when Gabe Newell announces you can play Half Life 3 exclusively on Steam OS, which includes in-game copies of The Winds of Winter, Doors of Stone, an English translation of Mother 3, and footage of 10 seasons of Firefly that had secretly been produced in private for Gabe.
The downside is they start the enshittification process immediately. The DRMs get worse, then the ads come, and finally the lawsuits and psyops on distros that treat us well and give us options.
I would make the money's paw consequences similar, but slightly different.
A bad microsoft update somehow manages to permanently brick every windows computer on the planet overnight. Linux is now the dominant operating system, but mass societal chaos results from 90% of computers being permanently bricked.