Earlier quoted context omitted.
You also need an idea that's somehow different from the rest of the market. (It's the difference of opinion/point of view that makes a market.) If everyone has the exact same expectations as you, no one is going to offer you the options trade structure at a price that would be profitable for you.
Need for a different idea depends on the full size. If there are 10 shared available for $10, then nearly anyone could buy them all up and so all ideas are saturated at just one poor person. However if the idea is for a large company there are thousands of shared traded every day, and so if your idea is the company will go up in value almost nobody could buy enough shares to make a difference - even rich would strugg…
Inherent in this $10/share profit opportunity is that not everyone agrees with you. (If everyone did agree with you, the discrepancy/opportunity would collapse from $10 to under a penny.)