Surrogacy and prostitution both depend on an assumption that using human bodies for commercial reasons is fine:
Using the same assumption, why not herd humans of all ages into intensive farms, to harvest human organs and blood, on demand, to the highest bidders?
Apparently to some extent this is already practiced, with living donors being imported, or rich recipients flying to obtain the purchased body parts.
The planet is overwhelmed with multiple billions too many humans, the majority of whom can make no contribution, just be life-long parasites, now that A.I. is increasingly able to our-perform humans. What is plentiful is cheap. A century of mass population explosion has made human lives cheap.
It would have been better to have had an international one-or-no child policy for a century. It rescued the population of China, and rescued the Chinese economy. It probably would have been an international policy, if women had been in positions of power and policy making, internationally:
Melinda Gates said that rich and poor, all over the world, what women want, above all, is control of fertility.
(Bill however, openly boasts that uncountable millions, or billions, of extra people are now alive on the overcrowded, poisoned, biodiversity-stripped, once perfect but now dying-by-humans planet, all "thanks" to him. Yet another example of how males, and male-run organisations, find it impossible to regard females as equal human beings, not merely as reproductive systems to be used.)