[majormajor]

Most people don't like littering and pollution. So we've passed laws against it.

Yet if you don't have any trashcans or other ways of disposing waste around, and you don't have much social pressure against it, many people will eventually leave their waste behind somewhere.

Much better to nudge them towards complying in specific with the laws that they want in general

[uoaei]

That's not even nudging, that's just providing a necessary option. There is no coercion between "I want to throw something away" and "There's a trash can on the curb".

[majormajor]

"Not providing the option very frequently" is pretty indistinguishable to me from "nudging in the wrong direction"...

but here's a much more explicit nudge example: https://en.wikipedia.org/wiki/Don%27t_Mess_with_Texas

[uoaei]

You're just trying to redefine the concept of the nudge. What a nudge is, really, is a thing whose purpose is to influence a choice, not to constrain it so that there is no choice.