I'm sorry, but what you're doing is no better than pirating. You're not paying for content you're watching, just like all of those masses watching over the internet. I'm not making a moral judgment on the matter, just calling out the hypocrisy in the bolded.
Agree to disagree. If you don't think scale matters than I don't know what to tell you.
Take this example. You have a 17 year old kid that lives in your house and uses your cable service, Netflix, Hulu, HBO, etc. This kids uses a Roku to stream all the services. Fast forward one year and the kids goes off to college. He takes that Roku with him and continues to utilize all the same programs. Why is it legal while the kid is under your roof and then suddenly illegal when his address changes?
When I went to Vegas on vacation last year I took a Roku with me and was able to still stream all the same content I do at home. In that scenario it's perfectly legal even though my address temporarily changed.
You are paying for unlimited streaming for most of these services. If your household suddenly goes from 5 people to 4 people (because someone dies or that same kid is now living in a dorm). Do they cut your price 20% because now suddenly you are using their service 20% less? I don't think so. The account holder is paying for that service. If he/she wants to share their passwords with 10 people that's their businesses. It's only going to screw the account holder over if he tries to sign in to watch something and the app boots him out because too many people are already signed in to use the service he is paying for. At that point he can either wait until someone using his information logs off or he can change his password and boot everyone from using his login information.