I would agree with Stef, especially regarding your situation. However,
if your passion is money and the topic doesn't matter much . . .
I'd suggest maybe you look into an aggregation model.
Maybe put together reviews of the content sites out there that make
sense to you from the layman's perspective.
As they say 'Everyone's a critic' so put that to use for yourself and
go review the content and make that the value added component / service
that you provide.
If it works well for you and you retire, real fast look me up, My Pay
Pal account always works!