The capacity of parcel shops seems to be a lot more than 90k based on my unsubstantiated guesswork; more likely things aren’t bad enough to merit a change https://www.nytimes.com/2019/10/27/nyregion/nyc-amazon-deliv... say 1.5M total deliveries per day. This means 6% of packages are stolen. So 94% of the time, it works, and that’s good enough for most. What can be done?
In my neighborhood we have a constant gradual uptick in crime until someone catches a criminal in the act and blows them away. Then crime goes back down until enough criminals forget the potential consequences. This might not be possible in a city as dense as NYC but increasing the severity of punishment could help