Re: they kinda missed a trick here?
>Except that if the protocols are open and royalty free
Don't expect that. From the announcement, it seems the results from this cooperation will not be a suite of Open de jure Standards, but something that closer to a proprietary pooling/cross licencing of patents.
Even though home automation networking has been an on-going Standards activity since at least the 1980's and so there will be much prior art, expect much of this has been made patentable through the usual application of magic words such as "...with a voice assistant", "...using Internet", "...using Cloud"...