I'm quoting Wikipedia (which means I'm wrong?), but: "Self-censorshi p can also occur in order to conform to the expectations of the market. For example, the editor of a periodical may consciously or unconsciously avoid topics that will anger advertisers, customers, or the owners in order to protect her or his livelihood either directly (i.e., fear of losing his job) or indirectly (e.g., a belief that a book will be more profitable if it does not contain offensive material). This phenomenon is referred to as soft censorship."

They can do as they please with their own thing but it is, in a sense, censorship.

I should have self-censored myself, because I feel fucking debauched for quoting Wikipedia. :(