A lot of the web properties are HTTP based and they probably won't bother to switch either because the owner doesn't care enough to go through all the hassle, or because they hosted their site/pages on a server whose owner doesn't care enough to go through all the hassle.
Just because these owners don't care about their site, doesn't mean they are not valuable.
Just because these owners don't care about their site, doesn't mean they are not valuable.