We know that no matter how big your arena is, the attendance will not go over some point.
Looking at the B3 top teams playing in their domestic league finals this period, i notice they range at about 20-21k even if their arenas are slightly bigger.
The B3 final, played at a 37,7k capacity stadium, had 23k attendance. The team that plays there, in the last games, reaches 22k attendance but with extremely low prices(5,18,50,400).
My question is if there is a cap on gate receipts, say 700-800k(in the top division), as there is on attendance.
If thats the case, there must be an equivalent cap for lower divisions as well.