If no midwife is available then you go in otherwise you are choosing an unassisted birth.
Thats different to a planned home birth where the midwifes are in attendance don’t mix them up.
When I got to the hospital with my first at 9cm there was still times I was left completely without anyone with medical training while they came and went from the room as I wasn’t pushing yet.
At home the midwife was in the room with me, watching me, she had called for the second midwife before I realised I was that close to delivering as she could see the changes in me. The same way she would have been watching for tiny subtle changes that something was quite right and that’s it you go in to hospital. They are very risk adverse they don’t want mums staying home if they think something is about to go wrong.
You also Though has to remember midwifes cannot force the mum to transfer if she doesn’t want to.
Apart from sudden oh shit. A lot of problems start showing signs just in hospital they are often missed because it’s 1 midwife to 8 women.
If you could give me a home from home room with birth pool, my own personal midwife, fast discharge. I would have happily gone into the hospital. But they don’t. My care was better at home.