MySQL: all their base are belong to others.

Unless you are running MyISAM (stop reading and switch now before you lose data)... the backend you run in MySQL has a product roadmap controlled by a competitor. Think about that.

To be clear, I think this does not lessen MySQL's value today. What it does is make me entirely unsure of MySQL's future value. What's next? Luckily, I'm patients, so I'll just spectate.