But there are many ways to make all of this stuff. Many times there are better ways and less harmful ways, but those are basically always less profitable.

This is capitalism and the one and only objective is profit. It's never going to be working towards having a sustainable world, getting better stuff, getting less useless stuff, etc.

We don't need half the stupid stuff that's being sold to us and we keep buying it because that's how the system is setup.

So yes, they aren't polluting for the fun of it. They are doing so for the profit of a few.