When a TV production/distribution outlet, like Amazon Prime has become, has a show that gets good press they tend to keep at it just for the prestige even if the money isn't all that good ... it draws attention to their brand. Mad Men was very effective at that for AMC. I suspect Amazon will go forward with another season. Of course if it really doesn't make any money then they'll probably write it off, they are nothing if not focused on the bottom line. I think we can reasonably hope.