Totally.. I mean things like rails are a bit over 15 year old, but elixir is 10 year old.. GraphQL was 10 years ago too. ReactNative was in 2015, so 7 years. Docker was 2016. Tailwinds was late 2017.

Startups happen all the time, and that includes the creation of new frameworks and new programming languages.

To the "where to find gold"... That I don't have a clue. If I did, I'd be there.