There’s no substitute for physics. A bigger lens in front of a bigger sensor, made to at least the same tolerances as a smartphone camera, is going to provide m

There’s no substitute for physics. A bigger lens in front of a bigger sensor, made to at least the same tolerances as a smartphone camera, is going to provide much better information as the base for a digital photo. So there will always be a role for bigger, dedicated systems when quality is paramount. Just like most professional movies are still shot on dedicated cameras with cine lenses. Some of what you might call computational techniques are already available for DSLR/mirrorless cameras. You just apply them in a post processing step on a computer, some time after the initial capture. Others are being built into some cameras. For example some mirrorless cameras can use their image-stabilization motors to shift the sensor during capture; the shifted images are then combined in-body to produce an image with more pixels than the raw photosites on the sensor.