Why did UI's turn from practical to form over function?
E.g. Office 2003 vs Microsoft 365
It's easy to remember where everything is with a toolbar and menu bar, which allows access to any option in one click and hold move.
Seriously? Big ribbon and massive padding wasting space, as well as the ribbon being clunky to use.
Why did this happen?
In this case I wouldn't associate the poor usability with the designers, I think its down to big business not caring. Plus it costs more to make a UI good, and flexible for different user situations. They'll also hire the cheapest designers. It's all about saving money and more profit. Their main aim. And in the case of monopolies, people can't go elsewhere. The problems all come down from the top.