Widgets always seems like a cool idea. Tons of helpful little utility apps that are quick and easy for users to view or access and developers to create. Seems great, right?
Then everyone realizes there are only a handful of things that are actually useful and worth the screen space. Clock, calendar, weather, stocks. Maybe one or two more like todo list, post-it note, battery level, search bar, alerts, messages. That's about all I can think of.
From DOS PCs to smart phones, the idea is resurrected again every few years. A company will decide widgets are an awesome idea, create an over-developed "open" widget platform, excitedly add it to their UI, only to later decide that maintaining it isn't worth the effort and it quietly goes away. Then a few years later the cycle starts again with better widgets this time! And so it goes.
At this point it seems like it needs to be some sort of fundamental law of computing: Any device with a GUI will inevitably have some sort of widget capability that is added, removed, redesigned and added again at least once during its lifetime.