Agreed with the first sentence, but I still don't think the math pencils out. I'm not going to pay City X $750 (on top of the existing parking charge and electricity) so I can use their charging network. The figure I'm willing to pay specifically for the EVSE access is probably more like $100.

Barring significant over-subscription, that's still a ~10 year payback. With massive over-subscription, it doesn't become a reliable charging source. (My prior post, which I'll leave unedited, was unclear/insufficient in stating it was longer than a one-year payback.)