[paxys]

I don't think there's any possible check for "blatantly account sharing". Whether there is a single account being passed around among a dozen friends, a parent sharing an account with their kid in college, a husband and wife using an account on their different business trips or whatever else, it's all the same to Netflix.

[librish]

The third one is different, and is allowed by Netflix.

[paxys]

It is allowed only as far as their tooling can detect.