Can you name a significant new technology class that started out life as open source? Linux "copied" unix, k8s "copied" Omega, etc. Was there a new category of technology that came out of open source from the get-go?
Yup, Wikipedia seems to confirm that the emergence of modern NoSQL followed BigTable/MapReduce and Amazon's DynamoDB: en.m.wikipedia.org/wiki/NoSQ…
Something like NoSQL is messy though, since it's defined by absence not presence of something...