I've been working as an independent freelance writer for the last several years. I have both individual clients and accounts with a few companies.
Editor75 works hard to show all the carrots of some sort of "unionization/organization" of the online writing industry but he forgets about the sticks. In real life carrots come with sticks. Apparently, in his delusional world he refuses to recognize this simple truth.
Mind that if you centralize how much you can or will write for (I assume there would be a minimum of $X per page or project enforced by someone - no idea who would decide on the level of difficulty or complexity which are not equivalent to page output), you would no longer be able to write what you like or for much you like, and when you like because a minimum pay would need to come with minimum output requirements.
In addition, belonging to some sort of union is not free. You have to pay union fees - I know a person who works for one, so I know it for a fact. They have their own rules and regulations you have to abide by, on top of general laws for everyone. Also, structuring is a means to better control workers time, productivity, etc. You become a small part of a huge machine you cannot get away from in a sense.
This is what happened with condominium associations in the US. They were meant as an entity to protect people and their investment in the co-ops. In reality, at this time there is no one who regulates such associations. They defraud many people who live in co-ops; they create their own laws, which aren't even checked by anybody (it takes about 2-3 people to force through whatever they like). If you as a resident don't agree with their bylaws, they can basically force you out of your home and sue you for your own money.
Being an independent individual with all the benefits it offers, I would never even consider joining such a union. It only would limit the little freedom I have left.
Maybe Editor75 wants to set up writers' union to collect union fees. That sounds like a good business opportunity and free money for a promise of illusive protection.
Beatrice