Options people say they wouldn't do can begin to be considered as time goes on
That's true, as time goes on an idea you would have rejected at the beginning becomes more appealing as time goes by.
There was a podcast where a woman who would never consider using a African woman's eggs before started leaning towards the idea due to a lack of black egg donors in the U.K.
I think Sophie Beresiner looked at commercial surrogacy in America, basically the goal posts move according to your own internal moral code and how you become more desperate or persuade yourself to believe it is ok for you to do something.
To be honest it works the other way too, where a woman has been a surrogate mother and she has a bad experience and perhaps has to have a hysterectomy, the options available to you to have more of your own children evaporate.
This woman speaks about this towards the end of the interview, she was considering having her tubes tied before agreeing to have a sibling for the couple she had already had a daughter for. She has a hysterectomy after the second daughter is born and later remarries (or has a new partner) and considers surrogacy through someone else but only momentarily as she says she could never ask a woman to go through that, and more importantly she would never do that to a baby. Her entire perspective of surrogacy had changed when she had been directly involved and very much taken advantage of at a young age.
This has been shared on another thread but I'll share it again, it's a tragic story but all her children (she calls them all hers) are safe from the commissioning father who was both a child abuser and involved in a human trafficking ring.