Ariakas has a great point!
and to add my own thoughts on your question, I believe polyamory is a lot like unconditional love. Just because some one claims to be in love with their partner doesn't automatically mean that their love is with out condition. For example 'I love my husband as long as he doesn't cheat on me' or 'I love my wife as long as she doesn't get fat' Which begs the question, "Was it really love or was it the idea of being in love?" (PF) In a round about way, is it 'polyamory or the idea of polyamory?' that we see in these people? And can it ever be pure unadulterated love?
Until the people practicing the act of love realize what unconditional means, it may never really be love.
"It is a truly wise man who does not play leap frog with a unicorn”