Ask HN: What are examples of startups that died by the hands of Big Tech?

It's commonplace to mock Big Tech for being slow-moving and lacking an innovation ability with several examples of startups that competed with, and defeated products from Big Tech. There are tons of examples of this (YouTube Vs Google Video as one). What are examples of the reverse? Like Pebble (smartwatches) losing to Apple Watch, Clubhouse (Kindda pending) losing to Twitter Spaces, Slack (??? had to sell to Big Tech) losing to bundled Big Tech 'Work'.

Sure, there are also examples where the startups did not exactly die Dropbox/Box Vs Big Tech storage.