Earlier quoted context omitted.
> you honestly have zero concept of what programming looks like outside of web apps Are you serious? I don't do web apps. But almost 100% of our stack is based on open source technologies. Python, Twisted, Go, etc. Every single thing we use is open source. It is ironic that you are accusing someone else of having zero concept of what programming looks like outside of web apps when one could easily think the same thin…
And then you go and quote three examples whose primary use (and for 2 out of 3, their creators and/or creator companies where web developers). And even most Go software is proprietary, hidden behind Google's bar.
GCC was so revolutionary because it brought a pro-level (although not at the start) compiler toolchain for free and allowed developers who were so inclined to improve and modify it.
And lots of Python code is for things like machine learning, Go runs lots of DevOps/neo-infrastructure stuff, and I can’t comment on Twisted.