Just wondering, is there a price for....

Finding good keyword ideas could be hard and boring task. When I am adding new blog posts, I always have a feeling that I don't know about what to write and that I will repeat something that I already many times.

I am sure many people are in same situation.
So I've just checked my google analytics keyword database from previous years and found 632 184 different keyword phrases that people used to get to my niche site. That is just for one of my sites (biggest one).

Sounds crazy, but it looks like gold mine for ideas and there are some really crazy things people are looking for. Basically, I can use this and make posts on other sites , not just by keyword, but depending on amount of how many times people searched for something.

It seems to me that this would be something that pay site owners or copywriters would like to see and optimize their products or develop new ones. (there is info about bounce rate,average session duration,etc...for each keyword/ keysentence).

So I was wondering, is there a market for such analysis based on years of data collection and even separated by subniches?

What do you think?

thanks