What one needs to remember, and that includes myself, is that film producers usually require “spec scripts” or scripts written with the intent of soliciting work.
That may come as a shock.
I’d sooner have my original story made for the big screen, but it does not work that way I come to find out.
What this means for the independent-minded writer is that he or she has to work for a producer if their spec script is approved of.
This means a writer writes what the producer needs as the producer has certain products they will produce. Not everyone does horror and science fiction. Not everyone is your thing, but some may be more up your ally.
This may leave any writer asking the same question: should one go ahead and write film and television scripts for that producer? These are choices one has to make.