I think they have already indicated that they will appeal the Belgique Verdict. How far they are prepared to take Appeals remains to be seen, but if they wanted , they could go all the way to the European Court.
Personally I would like to see them do so, and to LOSE ! This would certainly be a great step forward in getting the Shunning done away with !
FFGhost the case in Belgium was about Shunning, not about Tax, but you are right, they normally fight all the way to try not to pay Compensation or Tax. And of course maybe a Class Action for compensation by those recently Shunned in Belgium may be possible if they lose their Case. If they are arrogant enough to take it to the European Court, and do lose, the Compensation claims will flow in from all E.U Countries, if such a claim would work.