I believe Michael Jackson -may God rest his soul in peace- deserved his fame, iPhone or smart phone invention in general deserved the success, Hot Dogs, Burgers, Pizzas, Dubai Chocolate deserve eternal success, and many people, products, inventions out there deserve the level of success they reached …
And why is that? because simply people liked and loved them
Same thing in Gaming World, even if your game is a few lines of code like Tetris or Flappy Bird, or looks simple but addictive like Candy Crush then if it deserves success then it will succeed, but people have to know about it…
People knowing about it could cost you from 0 to millions of marketing Dollars based on your luck, but a game with a billion dollar marketing campaign would not succeed if it is not good enough
Roveo and angry birds story is a good example
ID Software with Doom changed the entire world of gaming, undergrad geniuses with no finance.
In this domain (Gaming Domain) there are no limits, but similar to any other market or domain, there are always big players and small players, and most big players used to be small
Good luck with your game