Bose and other bluetooth speakers don't have any strings attached because:
* you don't have to be connected to the internet to use it
* you don't have to have account with them to use it
* you don't have to grant tracking permissions to use it
* manufacturer can decide to discontinue product or go bankrupt - it doesn't matter, you can still use product as you did before, you're unaffected
* you don't have to worry about software deprecation - new versions of sonos client for iOS require recent versions of Apple devices - you can't install client on older phones/tablets to use your speaker