Earlier quoted context omitted.
The ribbon is actually a good interface, for me at least, much more pleasant to use than toolbars. The flatness and whitespace everywhere though, that can die in a fire.
But toolbars are essentially the same thing except they don't waste space, are moveable, resizable, typically customizable, and can be hidden.
The big difference is fewer clicks to do what you most often do (with ribbons). The cost is using more space and possibly cluttering the UI. You can also argue easier discoverability, but I'd guess that's up for debate (seems to for my old parents, but that's a quite small sample size).