A) want to read long form writing online, rather than in print,
B) but they don't use RSS, they don't use Readability, they're not using a mobile app, and they use the default website layout instead of the print stylesheets
C) and they're irritated or turned off by weird ads,
D) but they don't use an ad blocker
is a very large set, and I don't think it's growing any bigger.