I thought these top bandwidth usage lists are compiled by ISPs, not site owners themselves. In any case i don't think climbing those lists would be reason to d

I thought these top bandwidth usage lists are compiled by ISPs, not site owners themselves. In any case i don't think climbing those lists would be reason to disable gzip. In that case an easier method would be to just add lots of not rendered junk at the end of your html to beef up the data usage.