The growth of battery and a few other technologies have been frustrating in the past decade. But I wouldn't put cancer research alongside those. It's not every day that we encounter improvements in cancer treatments. The important fact to note is that cancer survival rates have improved significantly in the past few decades. Though, I'm worried that the current political climate will scuttle that progress.
But memristors is a technology that has been giving us frustrating false hopes for nearly two decades now. I think I'll just wait this one out till they have a product to show.
E.g.
4 days ago (same paper) https://www.reddit.com/r/science/comments/1s2bjqp/a_new_hafn...
3 years ago https://www.reddit.com/r/singularity/comments/14d1dt5/why_ar...
5 years ago https://www.quora.com/Would-it-be-worthy-to-use-memristors-t...