I mean, most of the magical uses haven't materialised. Computers are better, that's about it. It has a few other commercial applications, but they're indistinguishable from normal chemistry from a laymen's perspective.
That highly depends on what you mean by “nanotechnology”. There are tons of advancements in medicine that use what most people would consider to be nanotechnology. As well as material science, robotics, energy production and storage, and telecommunications, to name a few.
Honestly I had to look that up, because while I know the concept the term was only vaguely familiar. I would say I know more about this stuff than 99% of people. Relevant XKCD