Wall St. likes to speculate about this [1] and I think Netflix will deal with it intelligently [2].

Account sharing is good for business played right. Amazon makes it easy with it with Prime shipping benefits [3] and gets plenty of business it wouldn't see otherwise from my siblings.

1: http://bgr.com/2013/04/22/netflix-price-increase-rumor-45707...

2: http://www.theverge.com/2013/4/22/4253820/netflix-launching-...

3: http://www.amazon.com/gp/help/customer/display.html/?nodeId=...