I was once - and only once - asked if I could have had a writing career without the movies. That stopped me, and I was very happy to have to think about it, and decide I knew the answer. Yes; not this career, but a career. Without movie money, either from writing screenplays or selling rights to novels, I could still have enough of a career that I could support myself and not have to work at some other job, but it would be, shall we say, a less lavish lifestyle.