The fittest survives. Business strategy plus willingness to sell everything under one roof is the key to running a successful retail business. Look at Mustafa Centre.
MC sells everything you need to buy, except coffin, and it opens 24/7, no holidays, no shut down. Crowds walk in and out MC as if the goods "no need money buy" kind of business.
Can Metro, JL, Robinsons, Isetan, beat MC? They go belly up because they are still logged in to old business concept.