Maybe people are lazy, and maybe we just are suffering from information overload because there is just SO MUCH stuff coming across our screens every single day.
Good video takes time. I know this-- my wife created short clips for her non-profit organization with the help of our daughter who went to film school. And yes, we often have 30 minutes of footage to create a clip that should come in just under two minutes... which seems to be most people's general attention span.
Another guideline to follow is that it takes about an hour of filming to get an minute of finished video.
And I agree that people are suffering from overload. I mean just between social media and email, not even counting Youtube or something, people spend way too much time just looking at stuff. It definitely skews how we think about content.