Heh, Amazon tried this back in 2000 and it was very bad for customer trust:
https://www.computerworld.com/article/2588337/amazon-apologi...
https://www.computerworld.com/article/2588337/amazon-apologi...
Also, they have to deal with sellers. If you remember it was once upon a time that if you had Amazon Prime, you could buy items cheaper (including shipping) than non-prime members, because that hefty $75 fee made a "special members group" that could be directly marketed to. But now if you calculate shipping and price it is the same for Prime and non-Prime (if non-Prime selects two-day delivery).
Not exactly. They gave you option to purchase cheaper digital only one. Not blocked physical games altogether like MS tried before. Big difference.