Tangent, but it's a bit unfair to characterize Wal*Mart as unchanging or uncreative. They are similar to each other at any given point because they apply their innovation across the board, but not only is a certain kind of change in which they tend to engage rather irritating (like many stores, particularly grocery, they periodically seem to re-arrange their entire layout, making it hard to find things until you get used to the new one), but they were founded on innovative technologies and techniques (Sam Walton made his fortune on an inventory tracking system with then-unheard-of accuracy). And they're still working to constantly innovate new ways to efficiently bring together customers and products so they can maximize the convenience and efficiency of their massive buying power to their individual customers.
Say what you will about their corporate ethics or policies or attitudes; they are NOT stagnant as a company and they DO innovate, adapt, and change with tech and times.
In that, they are an example from which the tired and staid AAA publishing studios could stand to learn. Focus on the customer and what the customer wants and making things that earn you money the most convenient things for customers to do, and you not only will make the customer happy, but you'll make yourself rich and very, very big.