I’d agree with you if it was expected that prices would go up.
If I buy that HDMI cable for 9.99 at a store, I know that some of that money is going towards the store’s upkeep, employees, all that.
If I bought that cable at some gas station close to my house for 14.99, I know I could get it for cheaper, so I know I’m paying 5 extra for some convenience.
If I bought the same cable for 12.99 and a 5$ convenience fee from a delivery app, and learn it was a 9.99 cable, I was told the convenience fee was 5, but I paid 7 for convenience. I’m mad, because I was lied to.
It’s not about the higher charges. Not directly. It’s about the fact that I already covered the purchase price for the product and the service charge for delivery, but then I was secretly charged even more.
It’s about the deception. Like when a thing is normally 40$ but then it goes on sale, so the tag reads “~80$~ 49.99$”