The adult site industry has always been an easy target but has been protected by the enormous tax revenue the government received from it. However over the past few years, the industry has been eroded severely by minor law changes, free content and V**a and M**t**c**d rule changes and increased fees. (In case you are wondering, I am NOT permitted to use their names.)
There are a lot fewer sites, making considerably less money and that protects them much less from government virtue signalling.