Developing films with directors, developing films with actors, is a poor percentage play for a screenwriter.
As I was coming up on the stage, there was one source that could make or break you, the New York Times. Inevitably there would be one actor singled out for a better review, or worse, than somebody else. The effect of that was cancerous, divisive.
There has to be some limit to what lawyers can take from their clients. Otherwise, cagey attorneys end up with the lion's share of the settlement and the victims end up with little more than scraps.