Cant see of a reason for them to stop... (whatever)
The problem is they do it quite often and indeed, different routes end with no obvious reason. There is nothing you can do about it, apparently. Need some examples? Tampere - Malaga stopping in October, for instance. For many Europeans +15 degrees in Malaga in November it's just nothing very attractive, no reason to travel there. For us Finns it's a lovely chance to take a break and relief. During such a period we would pay much to flee from depressing darkness and chilly autumn weather. But... surprise, surprise, that's when the flights just end. Possibly the lack of insight as a reason for that.