Can one person build a web site that compete with the big ones?

Well, I have an idea for a great web site at my country. The only thing that is bother me is that I can’t play in the field with big ones. They have a lot of money, lots of workers, and I’m alone only have idea that need my full attention. It’s scares me a bit, because I want it to be one of the top 10 web site in my country. Is it possible to do that all alone? I know what to do and how, I just need the time and probably the courage.

I think a lot of people around me just don’t have fiat in my idea. So I am looking now for a great motivation. It’s hard. I know one day it will be a big success… just need to keep on going with it.