Agree, writing a blog post about how you are unemployed, and that NetFlix had $178 million dollar Q1 profits is not the correct way to go about this.
Write a formal letter, or even better hire an attorney and have them draft it for you. I'm sure $NFLX will be more than willing to pay out handsome royalties if indeed your story checks out.
I think "unemployed" and "hire an attorney" are not 100% mutually exclusive, but if he's not asking for much and doesn't have much money it's a probalby not a good option. As for handsome royalties, they're rarely large unless you've got a lot of leverage. You're coming at this as if he's got money and wants to make more and nothing in the post suggests that's true.
Write a formal letter, or even better hire an attorney and have them draft it for you. I'm sure $NFLX will be more than willing to pay out handsome royalties if indeed your story checks out.