Depends on what you want. A Partner you have sex with or building a life together are different aproaches. Of course, there is everything possible between these oposit points but thats not the point.

To come back to the story, what is your goal if you pay a woman to be you girlfriend? A fake relationship but maybe thats what he wanted. A bit of Company and someone to sleep with.

My point is, maybe if prostituiton wasn't shamefull, it would prevent onesided relationships.

You are right, having a deep, emotional connaction is valuabel. I just think ,not everyone wants that.