At some point, I think traditional database platforms like Oracle and SQL Server will build things that make it easier to treat them like a NoSQL store (simpler

At some point, I think traditional database platforms like Oracle and SQL Server will build things that make it easier to treat them like a NoSQL store (simpler replication, ability to distribute read only queries across multiple replicas, a few enhancements to sparse columns) and the NoSQL stores will add ACID, a query language, ODBC support etc. At which point talking about the "relational market" or the "NoSQL market" will not make a lot of sense. They'll all just be competing storage engines.