Yes, websites are getting more costly over time. It used to be animated gifs and now it's flash.
But this is why there are apps. Apps are local applications and developers can code with performance in mind. It seems to me that most web developers really don't care about the performance on the end-users machines.
You would consider a trend away from architecture-specific binaries and towards standards-based virtual platforms* like browsers and "managed code" VMs (i.e. java, javascript, C#, python, etc.) to be a benefit to Intel?
fpg
*I.e. platforms that are explicitly decoupled from the underlying hardware, and are particularly suitable targets for “uncore acceleration” that would transparently benefit any application...