The existing sideloading, other than on PC desktop, was only for developers (no cost, but you had to sign a non-disclosure agreement and more). Other than the

The existing sideloading, other than on PC desktop, was only for developers (no cost, but you had to sign a non-disclosure agreement and more). Other than the lack of cost it was more similar to Apple's limited developer sideloading than it was to sideloading on Android for mobile. This is actual consumer sideloading and root on the device.