The monkey can write the complete volume of shakespears works, cause otherwise there wouldn't be the probability that surpases 10 to the 40th power. You need to make a difference between micro situations and macro situations. There is only 1 maro situation for the monkey to write the complete volume of shakespears works but there are many micro situations the monkey does not write it. So there is only 1 micro situation that could get us to the macro situation for the monkey to write the complete volume of shakespears works.
A simple example: there arte many ways to mess up your room but there is only one way to get it in order. (The monkey has also one way to write the complete volume of shakespears works)

So larryjs

NEVER:it can't happen
I do not agree with this:

Probability is statistical so it could happen but the change to that is very, very small.

First example
If you calculate the chance to win the lottery the way larryjs says, it seems it can't be won. And actually there are people that do win it. Your chances are just very small.

Second example:
If you are 87 years old the chance you will die tomorrow is almost 100% when you are still alive the next day would this be a miracle? NO
The chance is statistical!
From the people born at the same year of the old man, tomorrow there will be almost 100% dead.

In case of the monkey the chance is so small it almost reaches the limit neever but it is not never.

Are more important question is: when the monkey do actually write the the complete volume of shakespears works is it then a copy or an original work?