Getting into the make money niche online would be really hard but not impossible.
If you know a lot about making money online and can write an E book or make a good blog on how to make money online and can write stellar content for your make money online blog then your blog could climb the google ranks.
Then when you get enough visitors you can monetize your make money blog through ads such as Adsense, Media.net or affiliate ads for products or services.
Write E Books and sell e books and teach other people how to make money online and you could make a lot of money yourself.
E books are a good thing to sell on your blog.