Also a lot of the sensors that Kinect brought to market first and a lot of very Kinect-like sensor packages have just made their way into mainstream usage. Any device with "Face ID" or "Windows Hello" support owes a lot to Kinect and uses a comparable sensor package to the first gen Xbox 360 Kinect (though usually a much shorter depth of field because it's just doing facial recognition rather than full room recognition).
You can buy USB cameras from Intel and Logitech with comparable sensor packages to a Kinect.
For Microsoft's hardware efforts that is often seen as its own win when they can take something people don't know they need, package it in a commodity way to get competitors to take interest and build their own versions:
The scroll wheel on the mouse went from an R&D project at Microsoft to the Office team realizing it was the future of productivity and bundling mice with scroll wheels with Office to now just about no manufacturer would think to build a mouse without a scroll wheel.
The Kinect used console gaming as a trojan horse to commoditize thousands of dollars of lab sensors into an integrated $150 accessory to the Xbox 360 and now there are versions of that sensor package in laptops and smartphones and VR headsets and so much more. Kinect as a gaming brand may be dead (for now? AR/MR gaming has always been one for recurring fads, it may come around again, who knows), but the legacy of Kinect lives on in hardware all around us. The hardware didn't just go back to being thousands of dollars of lab equipment, it became part of the computing atmosphere around us. That's an incredibly interesting and weird win that a lot of people wouldn't necessarily credit Microsoft for being such a lever, such an instigator of change/innovation, such a bridge between R&D dreams and "background" reality.
(ETA: Microsoft still sometimes uses the IntelliMouse brand as a bit of a retro-throwback, but the above analogy does help show how much that brand is very related to the Kinect brand. Almost every mouse today is an "IntelliMouse" under the original brand meaning. The brand did its job so successfully to point where people don't even sometimes remember the brand, other than sometimes retro-hardware fans.)