In addition to what you mention, things that you could only find at a brothel (oral & anal sex, or less usual things) are also not taboo anymore.
Some women and men love these sexual acts so it seems like they would pursue them even in the past. Maybe people are more open to admitting that they engage in these activities than those folks in the past, as well.
Keep in mind that even plain premarital sex for women was a taboo until very recently.
Oo
I don't know what planet you live on, but I'm fairly sure, side from open marriages where the couple mutually agrees to this, sex outside marriage isn't so much taboo as explicitly ruled out by definition.
And while divorce may not be a "scandal" per se, its certainly not considered desireable.
In short, you seem to have a bizarre view of marriage in the modern world.
You're using different definitions. By "sex outside of marriage," the previous commenter means "two unmarried people having sex," i.e., what's sometimes called "premarital sex." This indeed is no longer taboo in much, probably most, of the West.
I think the intended meaning here is "sex without being married" (or at least that's how I interpret it).
VR is going to be how that happens. I tried out VR pornography and there is very little a strip club offers over it: food, company and drinks. It's what made me realize what the true potential of the platform is.
It would be possible to implement a brothel with VR and teledildonics which, while not 100% real, would neatly skirt all the issues with real brothels: the law, pregnancies, customers who fall in love, the STDs and the moral leap required to walk into one. I'd do it myself if I hadn't figured out something far simpler to get off the ground.