Sure it can be zero. It can even be negative. As larger player numbers, including piracy, are a natural form of marketing. That means it's not hard to see this additional marketing could lead to larger sales figures compared to if piracy was not possible.
Sure it can be zero. It can even be negative. As larger player numbers, including piracy, are a natural form of marketing. That means it's not hard to see this additional marketing could lead to larger sales figures compared to if piracy was not possible.