WillowRun 6-3
Actually. thats not correct: The Internet Pathways you refer to are (almost by definition) unchanged from the original DoD TCP/IP specifications from the mid 1970's.
The Internet infrastructure is fundamentally insecure. Many corporate and private networks have added layers of security, but the internet backbone is something of a provinciaL Wild West outpost.
As a Cirrus instructor I'm well aware of Safe Return, the autonomous autoland. It's impressive; and based on 2018 processing power. It works (aside from ATC blind broadcasts) in isolation. It is one thing to select a GA Airport; quite another to land safely in a busy traffic pattern.
I love my day job seat in the A320; but the 1980's processing power afforded to the jet is great for envelope protection and flight automation. It won't play nicely in the real world for a long time yet...