The owner, MSG, is still in the red due to a couple factors.
By report the cost was to be $1.3 Billion, but then covid hit and it actually cost $2.3 Billion.
They turn a profit only during big, well attended events, which happen on and around weekends, leaving lots of idle time without a large, paying audience.
There aren't that many bands / attractions to draw people in, and the early ones, e.g. U-2 and Dead and Co. really reamed MSG pay-wise as they had them over a barrel.
Still and all I understand MSG is building another one, I believe in Asia: I like the concept and wish them well.