>>4205909There are several reasons. One of the major ones is that with the internet age, there are men today who have consumed porn for decades, and there are countless terrabytes available with just a few clicks, for free.
To make money with it, you gotta stand out. You stand out by trying new fetishes, higher production values, etc. If someone gets to stand out with more extreme content, the smaller producers follow suit to dip into the new market themselves.
After a while it gets boring and either a new fetish gets invented or focused on, or they go back to vanilla for a while.
As to why many Jews are invested in the Porn industry is, they simply don't care for the morals of the US, because they are not Americans. They also don't care about Christian sexual morals, because at best they are neutral to Christianity, often hostile.
I expect that a culture against, or moderating porn use will develop within time, as it is usual when new media or narcotics enter the market.