Not if the law of marital property were reformed to reflect the differing financial contributions of spouses in a polygamous marriage so that each spouse could only take out what they put in. The pressure not to allow one spouse to bankrupt the others would force this reform.
It would be no different from a public corporation with shareholders buying and selling shares at different times for different prices and taking the profit or loss accordingly.
I am talking about the husband. And polygamy runs like a chain reaction. One of the wives sets the precedent. Don’t think that others won’t follow because one of them showed the rest that it could be done. What about favorites? What about multiple sets of in-laws? There is fantasy, but then there is also reality. There’s too much expenses to consider, the offshoots keep it because unlike the mainstream Mormons, they don’t care about pushing for growth.