Personally, I don't think the 'Net' in NetFlix is about streaming. It's about the InterNET. Yes, the delivery mechanism was based on physical mail, but everything else was done on Internet [Browsing/Selection/Recommendations]. This is in contrast to B&M stores like Blockbuster.

[I don't want to take anything away from Netflix, I have completely stopped using DVDs since they started streaming movies. They completely rule the online streaming market.]