Of course. I've worked in and around the OSS DBMS market for over a decade. But the numbers were really big. It seems to me that out of a 2015 US $30B DBMS market Oracle and MS were collecting something like US $29B. The rest of the market,which included products like MongoDB and Cassandra was close to a rounding error. (I don't have the Gartner report handy, sorry.)
It's popular on HN to focus on OSS products, but there's a very large proprietary RDBMS market measured both in terms of revenue as well as users. That's how Oracle and MS got to be the behemoths they are today.
It's popular on HN to focus on OSS products, but there's a very large proprietary RDBMS market measured both in terms of revenue as well as users. That's how Oracle and MS got to be the behemoths they are today.