I am going down the gaming route, which is probably one of the biggest areas of YouTube with at least two people having over 10 million subscribers, but does this worry me, not really. I understand that I will never get that big, or not in the next few years anyway. As long as I have a small group following me, enjoying my content, I am happy.
To be honest, YouTube is more for me. I am not really a confident person in real life, but behind a computer my friends can see that I am a completely different person. Watching and making my own videos has really boosted my confidence and I am starting to feel much more relaxed at school, and I don't have to worry about what I am saying.