No, that is telling you you are asking the wrong question. They all started the same way and were intended to stay that way. For hard sciences they changed anyways because ..., this is not the case for this one.
They didn't change, the very first Nobel prizes in the other categories, including literature, so it's not just the hard sciences were awarded for lifetime achievements.
If you want to be condescending, at least have an idea of what you're talking about. Just stop now.
And yet, that's how all the other Nobel prizes work, not just in the "hard sciences", but also literature. Why is the peace prize the only exception?