Unless there is an official statement from UEFA, not playing a game in Europa League is considered as forfeit, no?
If Basel refuses to play at all, this will be the case of course. But before that happens, Basel will move to some other stadium outside Switzerland (Freiburg, Strasbourg maybe) or even play both games in Frankfurt. The odds for Frankfurt to qualify should carry some good value then.
So this decision taken by SFL clubs doesn't have nothing to do with European football in general. The only exception is that other leagues following it and if many teams from several European leagues will cease football activity then it may be the end this year..
Of course there is no or little consequences for European Football, but it's a hint to what
might happen in the upcoming weeks. Afaik Switzerland hasn't that huge amount of Corona cases, but they already suspend their league. I could think of a lot leagues doing the same. It's very hard to expand the leagues deep into May, because you have the upcoming Euro, so these leagues could stop with some games left to be played. Who will be the Champion then and what will the bookies do ? The rest I leave to your imagination and your will to take advantage of that money-wise
