Yeah, I’ve been tempted to try this route, but you’re really pigeonholing yourself. Even if there’s always wrk, I can’t imagine only working with cobol the rest of my career.
Even worse, the places still using this are very heavy in process, with many undocumented dependencies among many undocumented workflows and business processes. Modernizing COBOL is not a coding problem: it’s a mammoth project management, coordination, and paperwork project that also has a little bit of coding. And its not like you can write clean code, you need to write essentially the same tangled mess of accumulated changes over decades because there’s no way of knowing everything that might break