I'd argue:

The RPZ does not take away the public's use of the entire street. With O&M continuing to rise and a public unwilling to pay for it through increased taxes, a fee-based RPZ could bridge the fiscal gap while addressing parking-related congestion in certain areas. 

Further, I think we are long overdue to have a discussion about limiting the number of cars any one individual can own.  We are on an island with a finite amount of space to accommodate cars.