pets.com also failed to make it through the "carcinization" of online retail, but wasnt nearly as notable a failure because it was attempting to start an online retail business from the ground up, versus Sears' failure to adopt online retail to their already-successful B&M model. I think the Sears mode of failure is much more spectacular because it had previously thrived on a business model that's almost analgous to Amazon's, threw it away, and failed to recognize it could be effective again.