This is incredibly clairvoyant. Gates accurately predicted the success that content megaliths would see (I was thinking about Netflix, online news, personal blogs), but he didn't exactly predict the huge content landslide we face today and what it has created. For example, he basically urged corporations to create a bunch of content, while some of the most successful sites on the internet today simply exist to filter and aggregate content and to separate the signal from the noise (like Google).

Overall he's still right--content is king. But I predict that in the future the internet is going to be dominated by user generated content and websites that can effectively show us what we want to see--websites that can refine the ever-growing amounts of information we have at our fingertips.