This whole situation maps to iPhones as well. As things stand when you purchase an iPhone you own a glass brick, and Apple owns the phone part. They graciously allow you to use their phone to perform a certain limited set of activities. I am fundamentally opposed to this sort of non-ownership. Whether the buyer had an option to purchase a roughly-equivalent item with different terms is irrelevant; selling someone a product while retaining ownership of it is a mockery of property rights. Some rights are too important to allow people to sign them away with the tap of a button. When the market missteps by rewarding bad behavior like this it is the job of our democratic governments to step in and mandate good behavior.
[0]: this is made up to illustrate a point, I don't actually know how Roomba service works