I think it means that you need to keep the size the same and increase the price or keep the price per unit the same and decrease the size. I don't think digital services are considered to have shrinkflation.
That said, I don’t think this bill would target something like that, as it clearly discusses the “size” and “amount” of a product.
I suppose you could make thinner and denser font in last one to make it even cheaper.
It makes it easy to compare different versions/brands/sizes of the same product and select the most optimum version for you. It's a nice touch. Not sure if this is a EU thing, or just a store policy.