The advantage of an open-source database is the ability to customize it to your specific needs. Having said that, very few customers who decide to use an open-source database actually avail themselves of the opportunity to customize code.
A lot of people simply look at this committee as an ineffective advisory group with no teeth to get results.
Security is always a big concern for many customers and ISVs. The question really boils down to one of trust.
As scalability, performance, and advanced administration requirements are realized, you will need to look to a 'major database provider' to satisfy the business needs.
