Originally posted by beetle
I think even in today's broadband plentiful internet world, most people are patient enough for that.
Has nothing to do with the Internet connection, rather, the computing power at its disposal.
Believe it or not, modifying the DOM of a page on the fly relatively takes a lot of operation. (Update the objects, notify the renderer something has changed, rerender the page, etc. And each of those aren't necessarily efficient or simple.)