Is it little progress...or is it simply little progress down one particular skill tree?
All things being equal you'd love to see significant developments in all branches of STEM, but resources (human, financial, scientific) are finite so effort tends to be put into areas that give the best result (or return, let's not be naiive!).
That said, you often find when attention shifts back to a lesser-attractive form - such as these rodent...they can take advantage of advancements in other areas (computing/battery power and size) to quickly advance