[yumario]

I found this whole competition for Amazon absurd. Lets think about the prisoner dilemma:

    If A and B each betray the other, each of them serves 2 years in prison
    If A betrays B but B remains silent, A will be set free and B will serve 3 years in prison (and vice versa)
    If A and B both remain silent, both of them will only serve 1 year in prison (on the lesser charge)

Now A, B are cities and the can compete(betray) or not compete(stay silent). If they both compete (1th case) is the worst outcome because Amazon does not need a tax break or incentives. It's one of the richest companies in world already!

A competes, B does not (2th case). Good for city A because they can offer an small incentive an still get Amazon, bad for city B.

A and B do not compete. Good for both as the overall economy of the country would improve.