So cancel your subscription and go somewhere else. Why cry about it? There are plenty of other options out there. You're part of the group I was talking about in my post. You got something for free for so long now you don't want to give it up, so you make up excuses. Oh it was only worth it when you could share it with other people? Boo-hoo, go somewhere else and see if they let you share for free.
Your reasoning here makes no sense. They needed more people so they let the existing customers share their password? How does that bring in more people? It actually cuts into their profits. Yes, they intentionally let it go and that was their major mistake. In the beginning they were growing exponentially and it was probably too much hassle to chase down people who shared passwords or adjust their systems. Did you really think the free ride was going to last forever? Give me a break.
This is anecdotal. You assume less people would have joined, but you have no basis to back up that claim. If what you're saying was true then tons and tons of people would be canceling their service, but that is not happening, despite them "pulling this sh1t move" as you put it. Seems to me like most people are still happy with the service without being able to cheat and give away their passwords for free.
I'm not siding with any company. I'm siding with common sense and reason. Tell me another service where you can get something extra without paying anything for it? What other service can you share with your friends without having to pay extra for it?