I took a look at NCAA Tourney payouts per conference. Payouts are determined by games played by conference team. Amounts below assume conference splits pot equally among teams. (data source:
https://herosports.com/ncaa-tournament/how-much-money-nca... )
The big winners:
Big 12 -- $2.56M per school
Big East -- $2.22M per school
ACC -- $2.05M per school
PAC-12 -- $1.99M per school
SEC -- $1.95M per school
Big Ten -- $1.83M per school
WCC -- $1.19M per school
The losers:
Southern Conf -- $111,178 per school
MEAC -- $131,675 per school
Southland -- $131,675
MAC -- $142,648 per school
OVC -- $142,648 per school
Sun Belt -- $142,648 per school
Big Sky -- $142,648 per school
Seven conferences (22%) get 74% of the total NCAA Tourney payout. NINETEEN conferences (60%) only get 14% of the payout. Those conferences are typically one-bid leagues, so the at-large berths (or lack of) really inflict some financial damage.