I'm not aware of concrete stats, but anecdotally the porn industry suffers from extremely low margins caused by, among other things, incredibly pervasive conten

I'm not aware of concrete stats, but anecdotally the porn industry suffers from extremely low margins caused by, among other things, incredibly pervasive content theft, horrifically low conversion rates, high rates of fraud, high rates of chargebacks, a lot of amateur producers happy to give their content away for free, etc. Porn consumption is pretty common, but "nobody pays for porn" is a punchline for a reason.