Earlier quoted context omitted.
Indeed, this is a predictable effect of subsidizing on-street parking. Banning free street parking would unwarp the economics.
The down side is that retail stores suffer because customers are less likely to visit when they have to pay for parking. It's one more factor driving consumers away from brick-and-mortar stores to online ordering.
Struggling to see how a car space that can be taken with no charge results in more customers either, surely it increases the amount of time used by individual cars instead and reduces potential customers.
Very few retail stores charge by the hour. Getting people in and out as quickly as possible is the ideal.