Why are they not winning the CL anytime soon? They've got a coach, who is right up there with the best. They were in the final in 14-15 and were the better team now this year, when they got knocked out against Bayern (who, for my money, were the best team in Europe this season).
Higuain is as good as the best of them. But I agree, it's probably not really a good thing, to spend all that money on a 29 year old. They usually sign old players on a free, and then spend most of their money on top talents instead. This, by comparison, doesn't really seem to be anywhere near as intelligent.