"While free on-street parking usually stays filled to capacity—if not over capacity—off-street paid parking underperforms." Oh? Friends of ours used to live on

"While free on-street parking usually stays filled to capacity—if not over capacity—off-street paid parking underperforms." Oh? Friends of ours used to live on T St. NW in Washington, DC, just east of 16th St. We eventually learned to take a cab there. But my recollection is that off-street paid parking just isn't there in that neighborhood. The downtown office areas of Washington have lots of off-street paid parking, but from what I see there are large swaths of town with strips of restaurants and bars surrounded by residential blocks, and with very little in the way of parking garages. We did once pay to park to visit our friends on T. But the lot we parked at was dinky.