There are costs associated with keeping a monopoly closed
Could be a sum win for the paying team...
....home games generate around $2 million in ticket sales...plus millions more in parking and concessions.
....If you do not load up on boring cupcakes..the ticket sales for season tickets remains the same...and a 6-7 game home schedule is more attractive for the money than a 5-6 game home schedule
....while single game ticket sales may decline some for that game....not $1 million's worth.
So...buying an extra home game, rather than an away game that exists in a home and home arrangement, the money paid may make sense.