It should only take 10 minutes to negotiate a fix for this
Well, possibly a little more.
But shirley there are a number of defences and browser fixes possible?
It would have an efficiency hit but could the browser do a bit of random cache grabbing all the time? So the pattern is unpredictable? There are enough delays in loading and rendering a page these days that there is ample spare time to play around.
And does this attack work cross browser, so could you defend by using Chrome for the stuff you don't care about ('cos Google is snooping on everything anyway) and then say, Firefox in private mode for the banking site?