The anti abortion and anti birth control contingent would never let even a little of that happen in countries with significant fundamentalist and Catholic voters. There are plenty of examples where these people force babies to be born without a brain on principle. Just recently https://www.nbcnews.com/news/us-news/louisiana-woman-carryin... One can go back to something like Terri Schiavo https://en.wikipedia.org/wiki/Terri_Schiavo_case

What do you mean by "without a brain"?

There are multiple examples in the literature of people leading perfectly ordinary lives whilst unknowingly having no more than 5% of the typical amount of brain matter (typically because of hydrocephalus). For example, https://www.science.org/doi/10.1126/science.7434023 from 1980.