I think specifically in D&D there are spells that made the survival option pointless, like create water, create food and water, create tiny hut, summon grove, phantom ammo, mending, etc
Why do you want to seek shelter, spend hours in a smity or chase a rabbit when you can summon a palace and a feast with some spells?
There are even some "survivalist" backgrounds that gave you a feature that allows you to feed your entire party every day for free if you are not in a city. I think that option would simply force you to take some backgrounds, classes or spells in your party that maybe you do not usually take.
Good point.
Adding survival elements would not increase immersion.
Instead players would feel that they are forced to select certain spells or backgrounds.
Do you still remember the WoW argument from earlier.
Players will do all kinds of annoying stuff to get even the smallest mechanical advantage, even if it lowers their fun.
Its better to remove such stuff so players do not feel forced to play in a certain way.
I still agree with this statement from the WoW dev.
Prof. Dr. Dr. Mad S. Tist 
