most of the android/ios devices that are out there have had this capability for many years. Typical resolutions of 16 - 41 megapixel are common today. Why not use these cameras?
There's a huge difference in quality between a $200 smartphone and a $6,000 high end DSLR camera.
Not just image quality. But just very diferentes capabilities, like super telephoto lenses, ultra wide, instant focus, accurate focus tracking, easy manual exposure, external flash sync and the list goes on and on.