[firlefans]

jet.com used it heavily for backend dev, grew quickly, were acquired by Walmart, 560million+ in funding: https://www.crunchbase.com/organization/jet

Even if you'd consider them the Jane Street of F#, it's a counterexample to your argument.

[nojito]

Not really.

https://careers.walmart.com/us/jobs/WD635714-senior-software...

>Top-notch programming skills, with an interest in functional programming languages. We use F# right now but are transitioning to Java.

It's still used for the warehouse distribution team though

[pjmlp]

How much of the jet.com code is still in use nowadays?

Having been through a couple of merges during my lifetime, I guess "it depends".

[thrower123]

Hasn't Walmart rewritten all the Jet stuff in python and c# by now?

At least that's what I was being told five years ago.