"Web developers trying to make their pages look exactly the same in "all browsers" may enjoy a browser monopoly since it reduces the effort, but I think that's the wrong way to do it; ... The idea of progressive enhancement/graceful degradation, which can make for a better environment for browser diversity, seems to be completely lost on many developers."

Sometimes it helps to remind them of IE6 in order to make webdevs realize that a monopoly wasn't that good for them either.