I wouldn't have thought so, a charity would unlikely do anything tangible, not in practice. The "unit" cost would be too high to accommodate their needs, as they'd be exclusive. (i.e. they need a place to hang out and non-homeless people would not go there). Likely better off set against the general flow of people through SB's or wherever - not that that is a remotely complete solution.

They are going the McDonald's route and trying to be a community hub. I.e. when everything else is gone, they (and McDonald's) will be the only place left to go.