The power structure in Konoha has long since solidified, making it exceedingly difficult for commoner ninjas to rise through the ranks.
If a commoner ninja truly does rise one day, it is not because of how exceptional you are, but because the people at the top have decided you are a very useful tool!
Otherwise, with so many clans and so much talent, why would they choose to promote you instead of anyone else? To think otherwise is sheer delusion.
Chapter 290