Too bad, although as an F# fan, I expected this would happen eventually, somewhat surprised it didn't happen already. Jet.com seemed more of like an anticompetitive/acquihire purchase for walmart, I doubt they had any interest in the Jet tech.
F# is still pretty great though, I use it in many of my one-off personal projects. I think the jobs situation for it is still pretty poor in the US, but that seems true of any language outside the top 10. Even Rust devs, despite its popularity, apparently struggle to find jobs that use it. I suspect industry is very conservative with programming language adoption, maybe because there is a lot of risk in developing software in the first place. So there are winner-take-all dynamics in which ones get used in industry long term.
F# is still pretty great though, I use it in many of my one-off personal projects. I think the jobs situation for it is still pretty poor in the US, but that seems true of any language outside the top 10. Even Rust devs, despite its popularity, apparently struggle to find jobs that use it. I suspect industry is very conservative with programming language adoption, maybe because there is a lot of risk in developing software in the first place. So there are winner-take-all dynamics in which ones get used in industry long term.