Come on now people...
How many authors will ever reach Divergent-level success? (Movie deal, best seller, sustained readership, growing readership, huge fan base following, big book deal for sequels) Only a few writers in the world will ever sniff something like this, regardless of the quality of manuscript.
Now let's look at it further and the chances that you can achieve all of this with a debut novel. Well that select group of writers just got slashed in number again.
So now let's look at what has to happen to become the next Veronica Roth or Stephanie Meyer. You have to write a great manuscript. You have to write a great query letter. You have to find the right agent who has to fall in love with it and they have to find a publisher to do the same, and then once it's published there are so many things that factor into its success.
All you really need to do is go into a library or bookstore and take a look at how many books you see that are published. Then, when you realize you have never heard of about 99% of the titles or authors, you realize how difficult it is to be a booming success.
Can you win the lottery if you never play it? Of course not. If you play it will you ever win? Not bloody likely, but there is a chance, yes. But you have a better chance of being struck by lightning. If you had asked what the chances are of being struck by lightning, I would answer, not very good. But if you walk around holding a big metal pole during a lightnight storm while hanging in a tree I would say your odds are much better now. So, by that comparison, I would encourage you to write a great manuscript and have the mindset that if Veronica Roth did it, you can too. Believe that it is possible. But good heavens don't believe that it's likely because so much of it is out of your hands.
If you were truly interested in the statistics, you could research and find out how many debut novels are published in a given year, and you could find out exactly how many of those reach the best seller list and you'll have your answer.