How much do the studio, producer, directer, and showrunners make?

They’re contracted. So it’s irrelevant. It’s all based on what agreements they made with the production co.

I think the writers are equal to the producer, directer and showrunners at least.…

The keyword here is “I think….”

When they’re not risking loss, they’re NOT equal.

All of us should be sharing in more of the profits, not taking others down

No one is taking anyone down here. It’s just logical argument. You are basing everything on how you think it should be, without knowing how it is.