I think it is not quite as easy as that. There are also stories of people who got shut down by PayPal. So at some point you'll be dependent on somebody, at leas

I think it is not quite as easy as that. There are also stories of people who got shut down by PayPal. So at some point you'll be dependent on somebody, at least a payment processor - at least until Bitcoin becomes more prevalent... And what about the search engine - if you fall out of Google's Index, business will also be harder. There may be ways around it, like opening a physical shop where people can pay you in cash, but these are not automatically the better businesses to build.