Earlier quoted context omitted.
Amazon probably doesn't want to radically rock the boat when it comes to Whole Foods at the moment. It is an established well-working business, and they don't want another wave of "WF went to shit after Amazon bought it out, just look at all those changes they've implemented!", given that Amazon's reputation has already been kinda questionable in the public eye recently.
maybe it's just a coincidence, but I've noticed all kinds of everyday things being out of stock (eg, brussels sprouts and lettuce) at whole foods since the purchase. I'm wondering if amazon is getting more aggressive with the JIT inventory strategy.
If you've got a Whole Foods and a less-upmarket grocery store equally far from you, you're gonna get your staple foods from the less-upmarket store, and just go to the Whole Foods for the things only they carry.
But if you're making an online order with a fixed-overhead delivery fee from Whole Foods, you're not going to make a separate online order with a fixed-overhead delivery fee from the less-upmarket store; so you're going to end up ordering the staple foods from Whole Foods, too.