>Ok, some of these aren't proprietary, that if the big company supporting it would drop? I think the bus factor for all of these technologies is not the same.

>Ok, some of these aren't proprietary, that if the big company supporting it would drop? I think the bus factor for all of these technologies is not the same. Nor is the ease of switching. If AWS died tomorrow, people would switch to Google Cloud. If Facebook dropped React, it's insanely likely someone would come and take over (esp. since it's already open source). The cost in switching technology is just too big for big libraries/big languages (e.g. even with Oracle somewhat dropping Java, it's still top 3 of must used languages).