First I must write the thing
Then I have to find a publisher willing to take on my weird-ass "gender -bending tumblrina" universe [actual quote from one of my detractors]
THEN I have to get popular enough for the nervous fingers of Hollywood to want to even crack open.

Finally, I have to put up with whatever homogeneity the processing mills of cinema will do to it. As in, "Based on the title of a book by FAMOUS AUTHOR" variety of scriptwriting that seems to be based on a pitch by someone who maybe skimmed the book once, ten years ago.

[Yes I am looking menacingly at the BBC modernised version of Guards! Guards! by Sir Terry Pratchett, thank you for noticing.]