I suppose my kids could technically "roam" but they won't have anywhere to go that's interesting. Most kids can't even walk or bike to school in the suburbs.
In the suburbs I've lived in, there are no forts, woods, or trees that you can climb, without being told off by whomever owns the property the tree is on.
Ahh. I'm lucky enough that my kids have some trails, two parks, a lake, a water park etc. within walking/biking distance to roam to. Not to mention friends' yards. And roam they do.