We can avoid the problem simply by employing better design and a clear understanding of the intended audience. There is no need or moral obligation for all of

We can avoid the problem simply by employing better design and a clear understanding of the intended audience. There is no need or moral obligation for all of the internet to be accessible to everyone. If you're not a millionaire, you're not going to be join a rich country club. If you don't have a background in physics, the latest research won't be accessible to you. If you don't have a decent video card, you won't be able to play many of the latest games. The idea that everything should be equally accessible to everyone is simply the wrong assumption. Inequality is not a bad thing per se. However, good design principles involve an element of parsimony. Not minimalism, mind you, but a purposeful use of technology. So if the content you wish to show is best served by something resource intensive that excludes some or even most people from using it, but those that can access it are the intended audience, then that's fine. But if you're just jamming a crapton of worthless gimmickry into your website that doesn't serve the purpose of the website, and on top of that, it prevents your target audience from using it, then that's just bad design. Begin with purpose and a clear view of your intended audience and most of this problem will go away. We already do that by making websites that work with both mobile and desktop browsers. You don't necessarily need to make resource heaviness a first-order concern. It's already entailed by audience and informed by the needs of the presentation.