“It would be great if people had to buy more of the thing,” says guy who makes money selling the thing.
I wouldn’t say this is always true. Numerous times I’ve bought digital games from the PS store that were heavily discounted while places like Gamestop were still asking MSRP ($69.99) for new or $10 off for used on a game that came out years prior. I still prefer to own a disc but sometimes digital is cheaper and more convenient.