Where is this coming from?

A few of us have been asking for several months now about the source of the city's crackdown on go-cups.

I’m at Booty’s in the Bywater, drinking a frozen daiquiri. If I take it outside, I’ll be breaking the law.

The city has recently targeted the go-cup in this neighborhood, making its ban a condition for restaurants opening. More established joints aren’t immune, either – in March, as part of its punishment for music violations, the city stopped St. Roch Tavern from using go-cups.

So far all I've seen is shoulder shrugging. Whenever a city official is quoted, we get, "Go-cups have always been illegal" or some such Orwellian bullcrap. It's obviously a current point of emphasis. It must be someone's idea and that someone must have a reason.  I'd like to hear who and what that is.