I think measuring any financial impact purely in NUFCs finances as a way to see how hard it hits Ashley is missing the point. It's like thinking boycotts will annoy him because of the missed gate revenue (which has invariably already been collected by the ST payment anyway). Its about damaging the SD brand by associating it with a fanbase who refuse to sit next to SD branding and empty stadia.
NUFC finances are nothing to him other than a nice cash generator. It's the exposure of SD in the global market by being in the Premier League that makes his millions by indirectly building the SD brand.
But if things keep going the way they are for SD with it basically becoming the Pound Land of clothing, the perceived brand exposure might be worth less and less to the value of the club itself.
When SD goes under, I don't see him selling NUFC to keep it going. I think he'll double down and become an Oyston-esque-owner.
God help us.