There are only 4 successful general purpose production OSes (GNU/Linux, Android/Linux, Windows, OS X/iOS) and only one of those made by the open source community (GNU/Linux).
And a new OS needs to be significantly better than those to overcome the switching costs.
> There are only 4 successful general purpose production OSes
Feel like you are using a very narrow definition of "success" here. Is BSD not successful? It is deployed on 10s of millions of routers/firewalls/etc in addition to being the ancestor of both modern MacOS and PlaystationOS...
None of this counters the argument I made above :-)
Just because they have been made before LLMs doesn't mean it can be done again, since there was just one success (GNU/Linux) and that success makes it much harder for new OSes since they need to better then it
Well, by this logic there have been 0 successful OSes made with LLMs so far...