That sounds plausible in theory, but it's still pretty weird to me though because Home Assistant is exclusively the domain of home automation geeks. There isn't

That sounds plausible in theory, but it's still pretty weird to me though because Home Assistant is exclusively the domain of home automation geeks. There isn't even an off-the-shelf turnkey device to get into the ecosystem, you have to know what computers are (including scary things like "operating system" and "IP address") to even get started. I don't know what Chamberlain has to gain by sticking it to that particular demo. For HA to be a threat to the "partnerships" like Amazon, it would have to have an audience sizeable enough that Amazon would consider incentivizing adoption. I would say it seems dumb to piss off the most passionate fans of home automation when you're a vendor of equipment that such people might want to buy, but Chamberlain has such a stranglehold on the market that I think they figure that even if they royally piss off that 5% of the garage door opener market, those suckers (or their garage door installers) will be forced to buy the gear from them anyway.