The web works because of open standards. It doesn't matter whether you're reading this on a Firefox on Linux, Opera Mini on a BlackBerry, IE on Windows, or even (possibly with a few issues) WorldWideWeb on NEXTSTEP. You can still read this content, because all of the protocols and languages used to encode and deliver this content to you are open standards. For text and images, this pretty much works. Video, on the other hand, is a much more challenging issue.