Actually the Linux support model is, hire a support company... for enough buckaroos, companies spring up that will take Linux software under their wing and totally support it for you. If enough people wanted professional quality PL/I for Linux, that would happen too.
We’ve been a *nix shop since about World War 1. It’s pretty easy to use. I can’t imagine hiring someone to do it. But people get really intimidated by the Terminal command prompt.
We hired a 23 year-old to punch code. The first time he saw the command prompt, he almost walked on us. I didn’t even attempt to show him a shell script.