The site I launched last February expanded to its first ten thousand users in a month. My friend and I put no work into it after launching it, because we didn't think it was interesting, but I'm able to raise attention to things pretty quickly. (Even without putting in effort, some money was made—we opened up a shitty Cafepress account and put a link on, and sold a handful of shirts and mousepads.)
This month, as an experiment, I started a blog without any publicizing, to see how well I could grow something without any promotion. Three weeks in I have over a hundred readers and am currently growing at the rate of seven or eight readers a day. Now I'm experimenting with a collective, because I want to see how well I can divert those readers towards other people if I care to.
I know it's out of fashion to say this, but I believe in the long tail. I'm able to publish anything I can imagine without consulting other people first, and if I can find a thousand people to buy whatever it is I'm making, then perhaps I'm not yet rich, but I'm financially free to do what I like. I've still got three years, and I'm utterly confident of finding an audience.
I think you'll find that as you continue on in your area, the competition grows significantly.
I'm curious. Competition with who? I don't know anybody who writes the way I do, or makes things look the way I do, or plays music how I do, or takes photos the way I do. Art's a great field in that there's no competition unless you go the route of searching for grants and entering contests, and I dislike both. I'd never live a lifestyle that relied on the good will of a panel of judges—though if it comes down to it, I can compete.