Walmart's copycat strategy: Restaurant delivery is its latest use of heft to break into established markets

Walmart's main business is still its stores, but the company is always trying new things too. Bloomberg/Getty Images Walmart's move into restaurant delivery is another expansion from selling general merchandise. Since Sam Walton, the retail giant has placed big bets on new lines of business inspired by others. Here's a look back at some of the strategies that worked well for Walmart — and a few that didn't. Walmart got its start in 1962 selling general merchandise as a discount store in…