I don't think anyone should have a realistic expectation of making money directly from an open source project. You have to be strategic and tactical in how you

I don't think anyone should have a realistic expectation of making money directly from an open source project. You have to be strategic and tactical in how you approach the problem of monetizing. If you don't do it, someone like Amazon will. If you want to make that difficult or impossible, use a copyleft license. The choice of a permissive license implies things that you have to think about upfront.