No, that's not how copyright works. That's a myth. In some cases you can make a backup of the game if you do it yourself. But you still can't download someone else's copy.
> I'm not sure why copyright now means a company can charge me 100 times for the same product in different forms.
Because copyright means the company that sold you the product retains the right to copy it. That's not a right you bought when you paid for the game.
> It didn't used to and I'm not sure how this changed mindset in any way helps creators or society.
I'm not sure it's been a help either. Someone should change the laws to align them with modern society. But this isn't the way to do it.