Sonos is a particularly horrible company though, with software particularly hostile to end-users. There are many cases where they actively prevent you from using the device that you bought.
When a software update becomes available, you can no longer use the Sonos app or connect to a Sonos device, making the device essentially unusable, until you update your software.
When Sonos, for example, changes their Terms of Service to be even more draconian, you must accept the terms or the device ceases to function [1].
They require ridiculous access to personal information like location [2].
1: https://news.ycombinator.com/item?id=15071120
2: https://news.ycombinator.com/item?id=21771491
Everything this terrible company does shows that they consider themselves the true owners of the devices they manufacture even after you purchase them. I will never buy another product from them.