>> If it was an open source software, you will have the option to go to a competing vendor. You miss the point. Enterprises don't go looking for another vendor

>> If it was an open source software, you will have the option to go to a competing vendor. You miss the point. Enterprises don't go looking for another vendor. Vendors come to them with a sales offering. If I'm running SQL Server the I pretty much know where I stand with Microsoft, and there are endless MS approved support people. With PostgreSQL some vendor has to come to me and convince me to switch. PostgreSQL is really well supported, and it's at least an option. 99% of Open Source though has 1 or 0 support entities, and 0 sales people. Sure, with PostgreSQL I can do my own research. I might even have skills to do it myself. But now I have to explain my choices all the way up the ladder. Am I going to use an OSS accounting system with no sales people? With no support people? Or am I gonna pay $99 a year or whatever for QuickBooks?