A person who owns a Samsung phone gets the same functionality from any Wear OS watch, of which the Galaxy watch is one of many (the Pixel watch is just as compatible with their phone as a Galaxy watch). Google owns the ecosystem, Samsung has to rely on brand loyalty - not an ecosystem, because it doesn't have one, despite its years-long efforts (Samsung app Store, Bixby, and other duplicates to Google's services)
I think Samsung has a lot more power than you are suggesting here. Samsung is what ties together a Windows Laptop, an Android phone and a Tizen TV. As for wearOS I see your point with Google owning this compatibility layer, but it doesn’t carry much weight when there are a mere handful of devices to mix and match with. There is just not much leverage created out of spending the time and effort to make the ecosystem. How many combinations of Android TV products pair up with Android phones?
> Samsung is what ties together a Windows Laptop, an Android phone and a Tizen TV.
This is mostly hypothetical - does Samsung actually do that in practice? I haven't heard of anyone using -, nor am I aware of Samsung publicizing any such unifying services.
I own several Samsung devices, and have a Samsung account, and it is something of an annoyance to use. The power/potential is there no doubt, but services aren't a Samsung core competency.
