The relationship between spending and success in MLB is actually pretty loose.MLB is going to need to do something along the lines of the NFL to balance out payroll , or the same 10 out of 12 teams will make the playoffs every year
And remember, 90 cents of every dollar the Mets just promised to Carlos Correa are being pooled and given to smaller market teams.
MLB doesn't have a parity problem. MLB has a tanking problem. (Plus a Pirates and A's ownership problem)