What you have described is basically the "ultimate" in the cuckolding fantasy. If you are trying to use the pornography as a gauge for what actually happens, then you should realize that pornography is overly dramatized acting designed for a maximally pleasing viewing experience. Even the amateur videos are, to some extent, usually staged/exaggerated.
A large proportion of men who want to be cuckolded enjoy the *idea of* the shame and humiliation aspects of watching their wives with other men (often culminating in her choosing to be with the other man permanently). Personally, I am not into being demeaned; instead of getting jealous, I just get turned on by seeing my wife fucking other men (especially Black men). However, I don't mind humiliation of the husband being in the videos, and it seems like most cucks enjoy it, and some cucks are looking *only* for those humiliation videos. As a result, a high proportion of cuckolding porn ends up being about humiliation, submission, and wives permanently denying sex to their husbands. A high proportion of cuckolding porn also ends up implying that all these white wives end up having Black babies. I don't even want to go on, because there's some weird fucking ******* in some of those videos. Point is, all kinds of crazy ******* happens in porn, and this is one of those "out there" genres, so it's going to be crazier than usual.
The reality, of course, is that most couples just dabble in sexual fantasies, and would never take it anywhere near the extremes seen in pornography -- and, also, most people will only take the fantasy as far as they fantasize. For example, just because a man shares his wife with his friend whom he trusts after many discussions with his wife does not mean that wife will end up doing a bareback gangbang in front of the husband's parents and pastor. That's the cuckold humiliation fantasy taken to an extreme that probably will never occur in the real world.
Also, it's good to remember that this whole fantasy is based on the idea that the wife is going to end up totally subserviating her entire being to the purpose of pleasuring Black men sexually (usually, to please her husband). It is an exceptionally rare woman who is so impractically oriented 100% around sex. Most women have their own life goals and ******* that have little or nothing to do with sex. And, even if she is that submissive and that sexually dedicated, then she's probably already submitted completely to her husband's sexual pleasure, even including her cuckolding him if that's what he wants, and she will take that fantasy as far as he wants her to -- and, in most cases, not further.
Obviously, there are risks involved for any cuckold encouraging his wife to fuck other men. But, for a strong marriage with good communication and a stable foundation, the risks are minimal. Just remember that women are, you know, individual people, with complex emotions and thoughts, and you'll see that there's no reason to think that indulging part of this fantasy would automatically result in anything in particular.
