While this is a good mindset, I'm going to be honest with you — just like with a traditional publishing house, when you publish your book you run the risk of it flopping.
Having just re-upped for another two books with my brick - and - mortar house, I don't have to weigh the decision anymore, but as JSB wrote, like any other author, I'm only one or two flops away from no longer having a publishing home.