Not the point. The point is that people can then build db agnostic libs on top, so that several projects from different teams can use it despite using a differe

Not the point. The point is that people can then build db agnostic libs on top, so that several projects from different teams can use it despite using a different db. E.G: you can use django, no matter if you are a mysql or a posgreq shop and still use the entire ecosystem of apps.