lol -- You know... I never thought of it like that. All of the people they tried to crush never really went away.
- Firefox (Netscape Navigator)
- Linux (Literally everywhere now)
- Apple (they literally rescued apple!)
- Sony
- Google (Search)
- Slack (Teams)
- Oracle (Databases)
- Salesforce
...for each attempt Microsoft has made at crushing someone they deemed a competitor -- they sure are bad at it.
However, others weren't so lucky:
- Lotus
- Novell
- Palm
- Nokia (bought them and made them a zombie of their former selves)
- Blackberry (though, this was more Android than MS)
- Various web-mail competitors with Hotmail
- IBM (OS/2 vs Windows)
Though, I'm not so sure that last list was all Microsoft. More of a Microsoft + Market Pressures type of death.