After Groupon's meteoric rise and sudden fall from grace, the company is trying to re-establish itself as a mature, profitable enterprise. Three German brothers -- Marc, Oliver and Alexander Samwer -- came in and clamped down on high pay and set up a rigorously disciplined -- and unpopular -- system for managing sales reps. "They are extreme capitalists," says one insider. "For them there is no soft and fluffy side of the business. They're revenue driven, not people driven."
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