Ruby's popularity in the early 10s thanks to Ruby on Rails feels like it happened by accident. The language is hard to read and low performance, but Rails is completely automagic. But this is also the worst thing about rails. You create your app fast, but then maintaining it is expensive because you can't onboard new developers easily. Even if they're familiar with rails' automagicisms, it will take them quite some time to parse what the hell the code is doing.

Meanwhile I seem to recall Ruby's creator finding the situation of his language being popular because he'd created it as an experiment and never thought it would be used in production grade environments