I don't claim to be an expert on the endocrine system. But I know enough to know it's the most complicated system in the body. Possibly more complicated than the brain (my area of expertise).
And only recently did scientists figure out how to high jack the endocrine system for weight loss and not without plenty of side effects.
So in order for a baby to come to term, it must be exposed to different hormones , at different levels, at different times that come from the mother.
We can't produce all of those hormones. We can't even currently determine all of hormone needs of a fetus. So there is no way to meet these needs. Not to mention the protein needs. Again, many of which are made by the mother. And can't be synthetic.
We can grow an embryo in a container for quite a while. weeks. Maybe even a few months.
Sure, you can attach it to a roomba with temperature control.
But that's not the same as being able to grow a baby to term.