Technically you don't need a good idea to raise $40 million these days. /s To me building upon PostgreSQL was however, a good idea. Long term all databases gai

Technically you don't need a good idea to raise $40 million these days. /s To me building upon PostgreSQL was however, a good idea. Long term all databases gain relational features, through a rather painful process of realization that RDBMS actually did some things right. They'll skip that pain and focus on new features. Microsoft does something similar by offering a Graph DB on top of MS SQL.