Front end development if anything has regressed with javascript and front end frameworks, about the only way it's improved is in the questionable cross platform story.
The smartphone is obviously a gradual (occasionally not so gradual) improvement on PDA's, app stores existed before them too, although usually belonging to the phone operator or network.
We hear about amazon because they're in the tech industry, I bet if you followed the logistics industry as closely you'd see a lot of improvements. Particularly outside of the US where amazon doesn't have the same footprint.
The smartphone is obviously a gradual (occasionally not so gradual) improvement on PDA's, app stores existed before them too, although usually belonging to the phone operator or network.
We hear about amazon because they're in the tech industry, I bet if you followed the logistics industry as closely you'd see a lot of improvements. Particularly outside of the US where amazon doesn't have the same footprint.