Even in places outside SV e.g. where I currently work, we're trying to move away from these solutions in some case. We have PB of data in DB2 and most core data

Even in places outside SV e.g. where I currently work, we're trying to move away from these solutions in some case. We have PB of data in DB2 and most core data goes through Oracle RAC along with SQL Server and Teradata. But we still have use cases where we don't use these DB - partly for cost reasons and partly because we want different functionality. Berkeley DB ldap for accounts, ETL and analytics moving into Hadoop, some apps use Mongo and even other smaller apps use MySQL, and those are just the projects I know about from my view. We still pay for support contracts on all these projects but obviously costs are significantly lower. Even in a company that doesn't mind paying large amounts for enterprise database, I don't think that that reaching for one of these major commerical DB is always the right solution. Not all projects need the support you're paying for from them, and beyond that for some useage patterns I don't think they're even the right solution to reach for, regardless the cost.