Few of them also could be open, but just don’t advertise it.
IKEA stuff was all ZigBee, now upgrading to add matter support, so you could mix and match them with Philips Hue, Agara, Nedis and quite a few others. Main issue is always software support on the hub or app - Ikea has no smart thermostats, so even though it can connect to them, they don’t show up properly. That’s where Home Assistant shines, as it supports basically everything imaginable.
But you are right, most are proprietary because they want to lock you to their ecosystems. Exactly like cordless power tools and their batteries.
Few of them also could be open, but just don’t advertise it.
IKEA stuff was all ZigBee, now upgrading to add matter support, so you could mix and match them with Philips Hue, Agara, Nedis and quite a few others. Main issue is always software support on the hub or app - Ikea has no smart thermostats, so even though it can connect to them, they don’t show up properly. That’s where Home Assistant shines, as it supports basically everything imaginable.
But you are right, most are proprietary because they want to lock you to their ecosystems. Exactly like cordless power tools and their batteries.