There was something on The Athletic yesterday about this. Said it's easy to think they're on £100k a week or more, but that's not the case. Japhet Tanganga, young Spurs centre half who has played a bit this season, is on a grand a week. There's people on here who earn more than that.
It'd be nice to think the mega-earners like Sanchez, Aguero etc would donate/take a salary hit but there's a good few who won't be able to. And as Dave says, everyone has commitments. Just because they're bigger than ours doesn't mean they aren't less valid.