No other major company in audio has had to deal with technology upgrades to quite the same degree as Sonos. It’s the US brand’s advances in convenience, not audio quality, that have made it so popular. Sonos was the first to get multi-room right some 15 years ago when it launched the Sonos ZonePlayer and Controller, and it’s now become a victim of its own continuing success.
Let's be honest, few people complain about their defunct multi-room speakers made by LG, Sony, Panasonic, Denon, Samsung, Pure, Yamaha and whomever else has released a wireless audio product in recent years. No one complains, we'd argue, because nobody fell in love with them. No one built their homes around them. No one invested.
With Sonos, it’s been different but, while its customers have every right to be upset, how long can we really expect ongoing software support for anyway? Remember, these products won't stop working - they might just not get the latest bells, whistles and tweaks.