Heck. I've built my own embedded in memory EAV database back in 2002 for exactly the same reasons Joel mentioned. It was major backend part of my product that p

Heck. I've built my own embedded in memory EAV database back in 2002 for exactly the same reasons Joel mentioned. It was major backend part of my product that provided me with healthy revenue at the time. There was no way I'd be in the mood of paying licensing fee to somebody else.