I know the numbers for Rally Acropolis, I assume they are not very different for other rallies.
Organizing cost for Acropolis in WRC is about 2,8-3,0 million euros.
Organizing cost for Acropolis in ERC is about 0,5-0,6 million euros.
I don't suggest that WRC should or is possible to drop to ERC level, but FIA must, in these circumstances, reduce the cost for WRC rallies. For example, FIA should stop asking for 1,25 million as a fee and settle for much smaller amount and have a cost-cutting program for all rallies. It is mandatory, if we want WRC in 2021.