Do you think they will ban porn sites in the .COM extension?
I think in 10 years, Playboy will still be operating mainly in their .COM domain. Not that pervs actually go to Playboy for their porn supply.
And besides, if you are in the business of porn, you don't need minors who cannot pay moolah. You need the pervs who have credit cards. So putting up an "Enter-or-Leave" frontpage that requires a credit card access, can solve the issue.
Who in his right mind would put up a FREE porn site on a .XXX that will milk your wallet with expensive annual domain renewal fees ?? A lot of casual free porn sites exist because .COM domains are relatively cheap (cheap enough that you can pay it off as a hobby).
But the .XXX "red light district" is for the serious porn business. Not really for teenagers with raging hormones. You want porn, you need to pay up. It's practically pointless in the "business sense" to be blocked along with the rest of the .XXX, when you are actually screening out the minors with your credit card landing page. If you are scared that credit card requirement will turn-off potential customers, i think those guys are just looking for FREE PORN anyway, so there's no business with these types of people. You have nothing to lose evenif you are on a .COM domain. Why pay for .XXX version ?????