They tried -- back when what is now RadioShack was Tandy Corp. and Radio Shack was one of its units, it tried with the Incredible Universe stores -- but gave up because at the time their boutique Radio Shack stores were more profitable than their big-box Incredible Universe stores.
Of course, for widely-held, publicly traded corporations, there's a strong and often hard to resist incentive to do what maximizes results for the next earnings report rather than long-term resilience (if nothing else, because what will do the former is often much more clear than what will do the latter.)