it really is better for the devs

This is said a lot but... Is it really? And if so why should I, the customer, care?

I can't think of any other good or service in my life that I would go out of my way to buy from an alternative store so that the manufacturer makes more money. I don't choose between Aldi and Whole Foods based on whether the manufacturer of my chicken bullion cubes makes more margin with one or the other. It's just fuckin weird.