Because someone said they had to have a program and they just kind of did the bare minimum.

Because they meant well and hired a company to do it, and dumping was ehat they were set up to do.

Because they meant well, and then found out facilities didnt exist or there was a liability issue that made them skittish but the program had already been in campaign ads so constituents still had to see the bins, but the city would just be putting them wherever...

In Poland we do have a lot of separate trash bins at the lowest levels, because it was ordered by local administrations to look good. It is disheartening though when you observe it all go into a single trash truck every time.