I've started to give a pass on this sort of thing. A lot of time the author doesn't have direct control over the publishing medium. The text is Stephen Fry's, but the site design, ads, system administration, url, etc. are likely all managed by someone else.
Journalists similarly shouldn't be held accountable for the ads that appear next to their articles in magazines or the local paper no matter how ironic.
The fact that there IS an ad in the middle of his tirade probably illustrates his point that "the corporation" has infiltrated every facet of our lives.
Well, in this case the publishing medium is presumably owned/controlled by him since it's posted on http://www.stephenfry.com
While he may not have the knowledge to modify the site himself, he could tell the people he's paying to remove the ad. It's most likely the case that he wants the ad.
The irony being? It wasn't exactly a "stick it to the man / down with money" post, even if he has a small paragraph talking about young people rebelling in it.
