Because manufacturing cost and other costs that are a direct per unit cost, as opposed to an over all sunk cost like development, can not be recouped by 'making up for it with volume' as they say.

So a company selling such games will have a higher price floor than games without those costs, and due to that floor may not be able to achieve a profit maximizing profit maximizing point that a game without those costs may be able to achieve (such as selling 100 million games at $1 each). Their entire set of optimal production possibilities would probably be shifted inward.

Not saying a consumer should factor this in, just the game maker has a restriction on the consumers they can target that they would not have without those costs.

I do. Little factors like that may well nudge me one way or the other if it's something that I'm not sure about buying. In economic terms this is somewhat irrational, but then economics' assumption that the consumer is fully aware of his/her utility function/ There are lots of situations where this is not the case - have you never gone into a bookstore without having a clear idea of what you wanted to read?

The creators sure care if they can make back their development costs or not.