I'm not sure that the situation in Dubai is one that Romer would envision. You're attacking a straw man.
Having said that, I won't argue either way. The devil is in the execution no doubt. But in trying out his idea, I would hope that there's something we can learn from it besides the would-be automatic response of "that doesn't work." What we're currently trying is clearly not working all that well, so we'd be insane not to try something different and I'd hope that Romer can get two parallel "experiments"--for concisenss--in two different countries to see which conditions, if any, are better suited for his model.
Having said that, I won't argue either way. The devil is in the execution no doubt. But in trying out his idea, I would hope that there's something we can learn from it besides the would-be automatic response of "that doesn't work." What we're currently trying is clearly not working all that well, so we'd be insane not to try something different and I'd hope that Romer can get two parallel "experiments"--for concisenss--in two different countries to see which conditions, if any, are better suited for his model.