say you found a niche that is seached often, for example, 1200/day avg. at how many competitors would you draw the line and decide that there's too many competitors to even try to start a site? 100k? 250k? 400k? 1million? i'm debating right now on a niche, not sure if the kei is too low to even try to start a new site or not.
I don't play that game (I made my sites for the fun of it), so I am not an expert, but shouldn't you be asking how hard it would be to beat any of the top sites and outrank them? It could be there are a million sites with only a few inbound links that may be easy to beat or there are 1k sites each of them hard to beat.