Microsoft eventually dropped the Kinect and the price and sales of the Xbox picked up considerably.
RDR2’s performance/resolution is particularly brutal on XB1 judging by the Digital Foundry video that compares all the systems.
Unless all consoles/pc supported some kind of similar functionality most developers will ignore it because it's just more work for one console that won't actually sell anymore copies.
I can't help but believe with the same opportunity, using a different approach to market and promote the technology, it would have become a stable accessory with a very big customerbase.
I've had many discussions with parents who are absolutely OK with their kids playing games 'controllerless' but against the idea of their young kids using gaming consoles (couch zombie with controller/other input device). Kinect has physical movement and allows for young children to have fun before they can develop any competent skill or understanding using a controller - this disrupts a common bias parents have against their young kids playing a videogame. Missed opportunity.
So while individual consoles can be market successes or failures in their day, the ideas introduced by various consoles are much harder to score.
Wii/kinect is a gimmick that a finite number of good games could take advantage of and once they'd been released there wasn't really anywhere else to go.
Maybe we’ll see it next year with the next gen.