[majormajor]

I saw a solid dozen Python 2 projects leave Python entirely across a couple companies back during that timeframe.

The Python ecosystem has been growing overall especially because of the success of things like Pandas, but a lot of backend/fullstack web app programming did move away from it and never looked back.

(Though you might say the more interesting question is: would they have moved away to things like Node for async/perf or JVM-stuff for "maintainability of old large codebase with lots of devs" issues? Maybe? But at this point Python has added in a lot of things from those languages; but maybe if they'd been there five years earlier with a cleaner upgrade story the migrations wouldn't have happened.)