Just take the time making <i>your</i> website slimmer. Do not care about the others and rape the benefits having more visitors than the others. It is egoist, but this is the only way companies are going to move, if the competition is getting more visitors because of slimmer websites. If this practically does not change anything, then, this is a false problem.<p>For my website (chemical databank) I was able to measure the benefits of reducing the page size with more visitors from countries with poor Internet connectivity.<p>So, just do it and enjoy the competitive advantage as long as you have it! This is the best way to get things moving.