One day it might be a problem, but probably not the problem of our generation. Still statistically that says bitcoin cannot survive.
Here we go again. I don't understand why people worry about potential problems that won't happen in their lifetime. Bitcoin has many other problems that need addressing right now and in the foreseeable future. This is not something that we should be worried about right now, especially not when the reward per block is still high. Technically even if only 1 Bitcoin existed it could be users by millions of people due to it being very divisible.