This is a lot of tokens. Llama 2 was trained on two trillion tokens [1]
https://espadrine.github.io/blog/posts/chinchilla-s-death.ht...
I think by the time the former is an "issue", we'll have a Super Intelligence on our hands anyway.
The latter is looking less and less likely to be a real hurdle. Very little inductive bias to steer away from crucial solutions, very scalable.