There’s a particular kind of entrepreneur who hunts constraints. Where others see limitations as problems, they see them as moats to build. Geetansh Bamania is that kind. At Rentomojo, the furniture and appliances rental business he founded in 2015, every customer promise creates an internal constraint. Cancel anytime? He absorbs the churn risk. Free relocation? He needs warehouses in every city. Flexible ownership? He must carry hundreds of crores in fixed assets. His customers get freedom because he accepts none.

The wiring started early. In 10th standard, Bamania’s math tutor posed a problem to the class. Everyone else applied the standard theorem. Bamania, bad with memory, spent two days proving it from scratch. “I went against the tide to prove that theorem,” he recalls. “It took

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