Yes, I think it does. You believe people should be stopped before they commit criminal actions?
In a manner of speaking.
But if this is your point of view, how can we be assured that sort of a system will work?
We can't - but i doubt it'd be any worse than the system we have now. Either way, it's worth a try and needs to be proven. Even if it is, we've learned something. And we should never treat it as black and white. I'm sure there are many non-coercive (or as close as we can get) ideas we can test out - ones i haven't considered, for example.
As for some examples of why it might be a good idea, crime fell when the NHS was formed, when social security was introduced and it's fallen since New Labour brought in the welfare bill in '97 (and let's face it, it isn't their criminal justice policy) - though they're now basically undoing some of it in the latest bill.
Naturally, all these are only within the economic spectrum. There are quite a few causes for crime, and we need to decide how to address these causes, than restricting people unnecessarily. That is my opinion, anyway.