Fighting for a burger stall?

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Last year I saw two small entrepreneurs fighting at a corner. They were arguing about who came first at the corner and who deserves to put up his burger stall at the corner. One thought occurred to me. If small business like this can occur fights, what more about big businesses? Have you come across incidents where companies fight each other to grab tenders or something like that? What did big companies do to win big contracts? Do you have opinion in this matter?