Well here's the thing about both this post and that last post:
1.) Do you actually actively try to help others in their projects? Do you provide advice, feedback, say what you like about someone's work or what they can improve on? It's a two way street; we have to be willing to give what we want to get from other people. Like you're talking about people not giving chances, but...do you actually help other writers? At all?
2.) Do you actually have anything published or have you actively worked on anything? Novels? Comics? Short stories? Anything? Do you have anything published online at all?
Most people who do unpaid collabs actually do it because they not only trust this person but because this person has demonstrated they know how to act in a professional manner. The person has tried to help others, have published works, and all around don't feel entitled to other people's time and efforts.
This is coming from someone who has posted both short stories and comics. Currently, I use my Tapas account for my comics, but I was a writer who posted stories long before I started comics.
Moreover, as someone who has been in collabs that were unpaid, I personally wouldn't want to collab with you. It has little to do with the money. Rather, it's the attitude and the way you carry yourself. I can tell your frustrated. But addressing your peers in the manner that you do will make people steer clear of you. No one wants to collab with someone who acts this way.You get blacklisted easily and people end up remembering you as that person who didn't conduct themselves like a professional.
You really give me the vibe of "Oh, I'm never doing to collab with this person. Ever."
Edit: Yo -- just a heads up. I'm reading through their posts, and they may or may not be a troll. So like...take things with a grain of salt. Like, my words still stand here, but tread lightly with this user.