Researches used to have secretaries that helped with the extra work. Who, apart from very high level executives, have secretaries any more?
During exceptionally busy periods I frequently hire someone full time for a few weeks or a month to handle all of the things I can't.
It's super common.
On the other side of things, I could never hire someone to help me. I have to spend my time worrying about trivial things like optimizing my food budget so I don't starve. I don't have the ability to pull away the distractions.
And yes, I am a tech worker in the USA. I still have to do this kind of thing.