How relevant is the use of truly random numbers in modern cryptography?

Question

Cryptography

How relevant and relevant is the use of "true" random numbers, and not generated pseudo-random numbers in modern cryptography?
By truly random I mean generation based on probabilistic processes - whether it be the fall of balls in a lattice, or electron emission in a semiconductor, or a quantum transition ..

Answer 1

Actual. Otherwise, they would not build random number generators into processors. For example, Intel uses thermal noise in its RNG.

Answer 2

Not how much. In scientific research, perhaps, but not in cryptography. Who needs a random sequence of numbers that cannot be repeated?
upd: https://www.random.org/ already uses atmospheric noise to generate random numbers, so if your question is probing a niche for a startup, then it is already taken. :)