You should pick your technical stack depending on what the requirements are. Picking the stack first means you're forever going to be trying to shoehorn the req

You should pick your technical stack depending on what the requirements are. Picking the stack first means you're forever going to be trying to shoehorn the requirements around it, which is a pretty terrible way to design a long term solution. And then you need to look around yourself at the resources you have now and what they may be 5 years from now. There's no use writing something up in a little used language hoping you'll be able to hire for it later and adding risk by writing something in a language or technology only you know in your company is creating an unnecessary bus factor of 1.