This is the reason. The vast majority of the lads I know who I used to do European always, Southampton on a Wednesday night etc with don't go anymore and they've been replaced with, well let's just say, a different type of supporter.
Customers.
To me the boycott was never going to work, regardless of the past 2 results, it all comes down to the fact that their are too many superfans claiming they won't be stopped supporting the club they love, this isn't the fuckin club they love any more.
I always say each to their own but it's getting harder and harder to fathom why anyone still believes they should just do nothing and keep turning up.