Any company that engages in vendor lock-in, abuses copyright of creators through generative AI for profit, tracks users for profit/advertising, or censors content and people on their platform that suggest alternative platforms.

Microsoft takes all 3 points. It has created a very terrible operating system that gets preinstalled on most PCs through unfair competition, makes it harder and harder to customize it, has created GitHub Copilot that infringes copyright for GPL-licensed software and adds mandatory telemetry and Microsoft account. Additionally, Constructively criticizing Microsoft products publicly is dangerous.

EDIT: removed Medium link