I totally get your frustration.
It does support my theory that a modular approach is more sustainable; we elected to 'smarten' our existing equipment via the use of Chromecast Audios, and even the speakers we purchased last year for our bedroom are 'dumb' (other than BT) and have a Chromecast Audio attached. Maybe not as convenient, but at least the future of every single one of these six Chromecast-enabled stereos is not dictated to by the whims of the manufacturer.
I get the appeal of a single box approach, but there are real risks attached to doing so; we decided against a Sonos for our bedroom based partly on their closed system, and this provides another reason.
I use sonos because I havent found a decent alternative to a truly wireless surround sound system.