Speaking of a "year of Linux on desktop", it's mostly not happening because the desktop lock-in has largely eased. I of course love my Linux desktop, but I use relatively few native applications, and every one of them is multiplatform now. Windows desktop becomes less and less relevant in its own way, by degradation of experience, and by being replaced with consoles and the Steam Deck.

Same may happen to GitHub. CI/CD tools and workflows can become more portable and adaptable. Independent code review tools that can use GitHub API along with a few other APIs may become popular. GitHub will become one of, not the one. I won't call it a bad outcome.