So you actually don’t care about Netflix enforcing the agreement since you don’t care about Netflix.
Why does that matter? Don't discount my opinion simply because I don't care enough about netflix's content to pay for it. Nothing I've said hinges on that.
All other services not requiring one account per household is simply not true. Netflix is probably the only service actively stating that account sharing is okay. For example, Disney Plus terms states that you are not allowed to share your credentials to a 3rd party.
Netflix said the same things in its terms for 16 years. Would you have said "netflix doesn't allow account sharing"? Because that's a pretty ridiculous claim when functionally they did and everyone else does. I currently only pay for HBO, yet I'm on Prime, Hulu, and Disney+. Terms or not, we know what the reality is. So let's not hide behind faux-legalese and arguments even you don't believe man.
The reason that some services are more lenient on this issue is that they are still focusing on gaining market shares. Next phase is starting to focus on how to getting profitable.
They aren't lenient, they literally don't enforce it. And it's not just "some," it's all but Netflix and Apple* (as explained above). Because functionally it's allowed.
Netflix might be the first one cracking down on this but they are definitively not the last one doing that.
No doubt about it, but not sure its relevance.
If the streaming services don’t make sure it’s enforced the copyright holders will.
This sounds highly speculative.
I'm also not sure you really answered the "one account per household" thing. You are very precious about the ToS so I'm curious what you meant by this.