If they do classification right now for this season which impacts income for next season, teams are going to want to sue. You've seen the spread between Champions League, Europa League and no European football. It could be 80m vs 20m vs 0m pounds and the gate takings.
Once the teams have dealt with the social responsibility of saving human lives, they will have to deal with the business reality. They're going to struggle to get insurance monies. Plus they'll have to deal with the issue of a) do you refund fans for the rest of this season and b) how much are fans willing to pay for next season given the outcomes of (a)? Then it's the basics of the difference between being in Europe or not or being relegated / promoted or not.