🍁Nine Ancient Obelisks

So, any questions?

—Professor Lazerman! —a student jumped up, raising his hand. —We understand groups "A" and "B," but surely achieving success in group "C" isn't that simple either? For example, you probably won't be the only one to come up with such a clever strategy, which means you'll have to compete with other "C" groups, many of whom have been dominating the market for years, right? And also, you probably won't be able to start a business or switch to another one without initial capital—few manufacturers will agree to cooperate without a long-term wholesale contract, and it's not easy to attract customers either, and so on?