I agree with you with one exception: when a youtube video is preceded by an advertisement. Youtube videos load very quickly, but I have had to give up watching

I agree with you with one exception: when a youtube video is preceded by an advertisement. Youtube videos load very quickly, but I have had to give up watching some videos because the 30-second advertisement gets stuck in loading mode. I assume this is because there is a contractual obligation to show the ad at a minimum resolution, while the video itself can be delivered at a low quality and improve depending on the connection.