I really enjoy the sound quality and reliability of Sonos wireless smart speakers. But I don't like the cost or compatibility issues. I've looked again and again for a viable alternative to Sonos. But I've never found it.
In many ways, the Sonos issue is similar to the situation with Apple: It's a premium hardware maker with a locked-down ecosystem. If you can do it with Sonos, it generally works really well. But there is just too much that Sonos can't do.