I'm going to comment, and then Rene is going to add something.
The truth is, the way the world works today, every service makes its own rules. The organizations that you just listed all make their own rules. They want to keep that property. They want to force everybody to do the same thing, because they want to make their own business decisions.
However, what's important, as you said, is that when you talk to the driver's licence folks in Canada, they will tell you that the driver's licence is not an identity document. It just proves that you learned how to drive, yet you cannot sign up for any online service without your driver's licence. It's not an identity card; it just gets used that way.