Sure, things within the discipline of computing can be patented, but imagine if somebody just patented the entire discipline of computing.

Somehow 1 click buy doesn't quite feel like it's in the same category as humanity conquering the skies.

They didn't patent the equivalent, the entire discipline of flying. They patented "angular relations of the lateral margins of the aeroplanes may be varied in opposite directions with respect to the normal planes of said aeroplanes"

On my part, I'm not entirely sure what a lateral margin is, so I just answered somat's question which is about the entire discipline of controlling a plane.