[kabdib]

> It's not impossible but retraining 100+ developers in a new platform takes a lot longer than hiring a new team

So you don't get rid of them all.

I saw a team go from LISP to C++ in the space of a few months. Some people got disgusted and left, some people got disgusted and stayed (and we'd wished they'd left), but a surprising number prospered, hunkered down and shipped.

As long as you're in roughly the same domain (say, "phones") I imagine it's less expensive to keep most of a team around, deal with attrition, and hire in new folks to fill the cracks.