How long it takes to write a book depends on its length.
I'm in favor of any technology that makes my work available to the reading public at a reasonable price.
Some of my ideas were shot down by Lucasfilm because they stepped on territory that has been reserved for the movies. I didn't have a problem with that.
I've experienced writer's block, but never for more than a few days.
The mass-market paperback, for one, is too expensive.
I want a platform that, like a book or a magazine, I can carry into the bath or leave at the beach.