I always found the internet and online shopping destroying Sears, and JC Penny as semi humorous in a slightly twisted way.
You had a store chain, which built itself as a mail order catalog enterprise, which then branched out to brick and mortar where they stocked the more popular items from the catalog, but which still had their catalog.
The the internet move started, and they still had their catalogs, and brick and mortar stores. The internet ate into their mail order sales so the got rid of the catalog division, and moved to just brick and mortar.
If they had only had a modicum of foresight, and actual intelligence: They could have moved their catalog, (it was already in HTML, and it would have been pretty straight forward), to an online presence they would still be world class enterprises.