To your second point. Aren't the corporate objectives of all US companies to make a shitload of money for their shareholders? If so, they should be jumping on all those businesses like horny teenagers, because those businesses make a lot of money.
You're mistaken, there's virtually no money in the online adult entertainment business. The entire market size is only a few billion in annual revenue and it's primarily long tail, the majority of the larger players (ala Playboy) are losing hundreds of millions of dollars every year.
It's a small fragmented market which is shrinking every year.
That's true. From Wikipedia: "In 2007, Bang Bros generated a sales total of $1.9 million." That's very tiny given that BangBros is a pretty big player in that industry (2,898 Alexa rank for a paywalled site).