Let's be fair and compare similar products. Do you have any examples of $2000 mobile devices that support eye tracking on the OS level? The products you mention

Let's be fair and compare similar products. Do you have any examples of $2000 mobile devices that support eye tracking on the OS level? The products you mention look like they're extra hardware you strap to a Windows PC. Certainly useful, but not quite as potentially life-changing as having that built into your phone.