Usually, for most of the couples, this works only on paper. I think that one of the differences between a man and a woman is that a man can cheat, and go back to his family, while a woman when she cheats/has sex with another man, there is a good chance she will bring the whole package. I wrote in different post about this. But to work, usually how I see it, the dynamic should be, us (the husband and the wife) and the rest of the world, and the bond should be so powerful and their relationship should be seen as superior by them that the others are mere playthings. The problem is that in most of the cases, this lifestyle is focused around the idea of replacement and humiliation.
Regarding Anon, I suspect that the OF didn't go as planned and they didn't had enough earnings to justify the effort. I could understand the idea of her not having time, but she could have dropped some updates/messages. Or there is the other scenario where shit hit the fan.