There was no drone delivery future. There was never going to be a drone delivery future.
Just like there was never going to be self-driving Uber taxis. Or Amazon Go supermarkets on every corner. Or hyperloops. Or earth-to-earth space travel on SpaceX rockets. Or level-five full self driving Teslas.
Just like there will not be a general artificial intelligence ChatGPT in the next couple of years.
They were all scams designed to lure dollars from investors and generate good PR.
It was all bullshit. It was always bullshit.
Nothing more.