Postman which I thought worked locally on my computer, is down

I am against government regulation, but at times likes this (or your sous vide and washing machine requiring online accounts to function) the idea for regulations that mandate availability of local server for client server applications is alluring. And making all cloud functionality optional.

Or just use an alternative, and there are plenty of them in that segment, no need for the legislator to do anything here.

Just use an alternative is not a long term solution when we talk about customer rights. Because the enshitification marches trough the products.