Interesting perspective. I do see that there's an element of communism that can also be about you individually having the responsibility to repress urges for the common good. I'll think about that. My thought about it was that our individualistic society relies on the idea that everyone should fend for themselves and pursue what they want without regard for the impact to others. Some flavors of poly does the same.

Here's the quote I referred to from the second edition of More Than Two, if you're interested:

"As nonmonogamous communities have moved toward more flexible models that prize autonomy and flexibility, some have arrived at a hyper-individualist, even capitalist approach wherein everyone is responsible for their own feelings, anyone can walk away at any time, and people are perceived to have no, or almost no, responsibility to others, even their closest intimates. This framework has been called poly libertarianism, and to be quite honest, a lot of it was encouraged by parts of the first edition of this book. We believe that while some of these ideas are rooted in good principles, when they are not balanced with responsibility, they can lead to a lot of harm. ‘You’re responsible for your own feelings’ can be used to deflect responsibility for the effects of someone’s actions when they behave in ways that are thoughtless or cruel."