It is humorous that the article mentions the "fragmentation" of app stores... Apple is unilaterally dominating the app store concept, maybe the others are fragmented, but Apple owns it.
The idea that we need a single supplier of something or a single marketplace from which to purchase things is laughable -- to me, at least. To carry this analogy outside of the 'phone app' space, should we just give up on all generic retail space so that consumers just go to Wal-mart for everything but furniture (Ikea for furniture). Then consumers won't be so confused about where they should go to buy their furniture or groceries.