No. Suppose you have a country where the natives don't effectively reproduce. (less than 2 kids per couple) They save lots of money they would have had to spend on their kids. Then some Muslims move in who produce 4 kids per couple. Sure the Muslims have to work harder and sacrifice more but what religion do you think that country is going to be after a few centuries? The answer is strength of numbers. You are doubling every generation and the other life form is holding study. That's how a single germ manages to kill a host trillions of times its size.
If I say that it's rare and it just took a long time to happen, I will get an F.
We know it happened from the fossil record. Why it happened is a guess. I did venture a guess, namely an alliance between two different cells gives it more of an advantage than one living alone. I suspect the first grouping of cells acted somewhat like a Portuguese Man-of-War . It's not a single creature but actually a colony of different animals acting together. We do know that once you did get multicellular animals a huge expansion of diversity was let loose. It was definitely an advantage. Funny how folks deny the existance of a puzzle because we don't have all the pieces.
And we know the Empire State Building was designed likewise. From the edifice itself which evidences a designer and design as well as the designer notebooks and blueprints themselves.
So too the fossil record -- it shows the evolution of a designer's design. Chance is sorely pressed beyond any reason to explain large jumps in the record. And changes both lage and small may indeed be evidence of an active designer, just as a chnage in construction techniques or materials between the tenth floor and the twelveth may indicate evolution of the designer's design as the building was built.