My personal controversial theory: lack of first class support for Windows. This was a big reason why Python had a renaissance amongst learners, academia, data j

My personal controversial theory: lack of first class support for Windows. This was a big reason why Python had a renaissance amongst learners, academia, data journalists, and a lot of more "casual" developers that Ruby is perfectly suited for. Python has pretty much eaten up the "not a webapp" market Ruby could have easily had and JavaScript rapidly began eating up the webapp market from the other side, leaving Ruby with quite few unique selling points (though I still love it myself, I'm speaking in broad ecosystem terms).