If Amazon offers what everyone else offers locally then it diminishes its advantages

Sears Sells something for Everyone, and That's the Problem describes Sears origin as a catalog company that gave a dispersed customer base access to products not available locally.  That's Amazon today! Curiously as a grocery vendor on Amazon I see the seeds of a hubris blind to its advantages and faults as it enters into the realm of bricks and mortar based commerce.  Amazon's online advantages are unlimited shelf space and complete geographical coverage. Its disadvantage is the high cost of shipping low value product. Currently we are experiencing a change in Amazon where it is culling product offerings as if their shelf space was limited. It appears it does not recognize that its marketplace offers unusual hard to get products to everyone willing to pay for the high delivery cost. If in its quest for bricks and mortar commerce it offers what everyone else offers locally then it diminishes its advantages in the way Sears did.