Is being listed in the App Store a contract? Does it matter that my app was good to go at one point but could be pulled at any time if they introduce a new guideline? How do they justify unilaterally affecting what has to be a billion dollar industry that relies (or what could amount to legal reliance for equitable reasons) on them?
Who do they need to justify it to? It's apple's app store.
I'm talking of course in a moral, good for business good will sense and not legal.