All of those examples have razor thin margins in the overwhelming majority of cases which translates to not actually paying that great for everyone involved. It's like acting. Few will people make big bucks. Ever wonder why "professional amatuer" porn is such a large share of the market? Less people to pay. Most Youtube channels that have actual costs per episode (e.g. every time Demolition Ranch mag dumps the Barret that costs about $20) are made by a couple people working for free and do weekly episodes in their spare time so they only have to recoup consumable costs.