Really any cloud-connected device would fit this bill. Many have gone out of business and turned off their backends or changed the way they work in a way that i

Really any cloud-connected device would fit this bill. Many have gone out of business and turned off their backends or changed the way they work in a way that is incompatible with the original purchasing intent of the user. Not to mention software products that evolve in ways the user doesn't like all the time. https://www.bbc.com/news/technology-64249388 https://www.bbc.com/news/technology-64249388 is an article with some more specific hardware examples if that's what you're looking for.