The "drama" of this scene is seriously undercut by how much these people seem to be loving having the chance to be women in a giant harem.
Seriously, "Darn I lost, but oh well, now I can dress up in gothloli and eat some delicious lolipops, while uncle-aunt can try out those super-elegant pipes and the frilliest dress money can buy!"
I kind of harped on this before, but wouldn't gender identity be even MORE important to a culture like this? All these women are basically prisoners or war/slaves/trophies plundered, so wouldn't the, you know, stigma of that have more impact upon them? They seem less frustrated than someone who has to sit out because they got hit in a game of dodgeball.
For that matter, how did noblemen arranging marriage based upon the social status of the other partner as a tradition even continue to exist this long in a world where marriage is based upon simply clubbing whoever you want and dragging them back to your cave to be "ruined" at this point?
(Also, if Picasso wants all the eggs in Juri's family... why didn't he take Juri's when he had plenty of opportunities to do so? If he's going to leave Juri alone because he likes Juri... why keep Rolo? Rolo isn't part of Picasso's plans at all, so why take him, other than to antagonize Juri? The only reason to let Juri go is to allow Juri to start a revolt against him, which achieves the aims the artist wanted, but is suicidal stupidity on Picasso's part.)
To me it looks like a "not turning back so get used quick" situation. If there is not rule for turning back and both agreed to settle it on a fight beforehand, it's only natural to accept his fate fully knowing the consequences from it.
Arranged marriage exists for the same reason everywhere else: money. Juri had to quit family finances in order to marry Rolo.
If we go by the always convenient plot any stories have, you could say Picasso took this one chance and planned all along to get more than only Juri's egg. After all both have to agree on battling each other to get someone else's egg. If he still keeps Rolo's egg is to force Juri to fight him, yet she disappeared and formed a rebellious group to fight the system and get him back. Though, if Picasso was that strong there was not need to plan and just force a near death agreement. But I suppose that only works for barbarians and mercenaries, not someone refined to be around noble classes.
If the fact that both have to agree to a duel to lose an egg is a real problem, then Rolo never would have lost his egg in the first place, and neither would all of Juri's relatives. Why did Juri's younger siblings agree to a duel when everyone else who had tried already lost? If Picasso could coerce all those people into a duel, why not try to goad Juri into the same instead of leaving a giant loose end free to seek revenge? (And really, there's no reason at all to keep Rolo... He let the father's wife go back to a man, so why keep Juri's husband a woman, other than to antagonize Juri into fighting him... which he doesn't do.)
As for magic making them accept it, that's also an ill-defined thing. I mean, it apparently makes some people straight (as women), but Roland doesn't seem to have been effected at all, and none of these women seem interested in their captor, either. (Rolo is clearly traumatized by it.) Even with the two who lost their eggs genderswapping constantly, only the man at the time seemed to enjoy it.
It's not just "getting resigned to it quick", either - again, Rolo was not at all resigned to it when first seen, but the father and cousin are IMMEDIATELY used to it and living it up with gothloli outfits and lolipops. Where's the consistency?
Is that what you meant by things coming to an end?Why did you lose your egg as well, father?Over there, is that...Uncle Vincent and Uncle Roque?My two younger brothers also...Juri...
