The technology exists but pilots and companies refuse to use it

Technology that might have averted Alps tragedy has existed for years but has been resisted by aviation industry 'Uninterruptible autopilot system' would allow ground controllers to activate mode that cannot be turned off on jet. But support has stalled amid fears of dangers of eliminating pilots and possibilities of so-called cyber-hijacks

I know nothing about planes or the control of them, but I do know software and programming... So with all of today's technology, surely there is a way that airplanes could be 'controlled' by the Aviation Authority, to be set a destination just before take off, and the plane will ONLY go to that destination. Then also, surely the plane could have some sort of computer take over, in the sense that if a plane goes into a steep descent, or becomes say 5000m close to the ground, whilst not at the designated airport, the computer will take control and not allow the plane near the ground. This would also help with cabin decompression. BUT, in the case of an emergency landing required, the Aviation Authority, could change the destination to the nearest airport, remotely.

Many more lives have also been saved because the pilots took over control from the automatic system.

I hope camera is also install in cockpit and cabin which could be read by the black box.