I think some are forgetting that there are always loads of STHers who don't go. Hasn't been an issue for a long while as the ticket exchange has been open regularly.
On top of that it's a school night. Particularly relevant if you live a long distance away.
Plus the train strike and expected...
Indeed.
As an aside, my personalised Amazon home page had promos for the Man United and Man City games earlier - and it knows I'm a Brighton fan through past purchases (it usually shows Brighton match polls, for example).