Ride share isn't the issue, blocking a lane to discharge is the issue. $10,000 fine for anyone caught parking in a lane. Park at the hydrant to load or unload. This includes everyone, not just ride share. Applies to Amazon, trucks, private cars. I am from Sunset Park, main traffic issue on 4th ave, cars double parked. 10k fine and that disappears.

And if you are thinking "But trucks are too big to park at a hydrant while they unload" NYC is a small city. Maybe we need small trucks. https://en.wikipedia.org/wiki/Daihatsu_Hijet#/media/File:Daihatsu_Hijet_Cargo_1101.jpg