In my opinion the question is how do we treat hybrid software products: A part of it runs locally and another part runs on a server. If you sell/advertise thos

In my opinion the question is how do we treat hybrid software products: A part of it runs locally and another part runs on a server. If you sell/advertise those two pieces of software as a single integrated product but you only give away the client executable, how long after the sale should you be required to keep the server running? It's a bit like a web app: The user downloads some HTML+JS which makes XmlHttpRequests to a server backend. In theory the user could download the HTML+JS only once and keep working with that initial copy, but after a few weeks the server endpoint might change and break that copy. I think the expectation for a web app is to keep working for a day or so and the expectation for a console game is at least 20 years?