That has been a consideration for me. I'm self-employed and drive a taxi. I've been considering some co-op marketing with a few of the the other drivers in the fleet (we lease from the same taxi company). I've been slow in pursuing those efforts for I have yet to suss out all of the efforts they already have underway and how they'll work with what I'm proposing.
It is very similar to considering a possible partner and how many other partners they have and how difficult scheduling is likely to be and so forth. If another driver has several personal deals that will tie him up quite a bit, he won't have much time available to put into any co-op effort with me.
When speaking of various forms of non-monogamy...it ain't poly if you're just fucking around.
While polyamory, open relationships, and swinging are all distinctly different approaches to non-monogamy, they are not mutually exlusive. Folks can, and some do, engage in more than one of them at a time--and it's all good.