This thread makes no sense. Valve nor Steam exist to save you money. It does not belong to you, it is a service customers either choose to use or do not choose to use. More and more publishers are choosing to use digital distribution for two reasons:
1. The cost of making a disc and boxing it and physically shipping it.
2. Pirating bastards.
Steam negates all of this. For them it is win-win.
You don't like the price of a product? Don't buy it. Get the console version. If they were really, really honest, both MS and Sony would have their own online store version which you could only access from a shit box and you'd never be able to buy a disc version of any of it. In fact, they probably didn't want to bother equipping their new boxes with a DVD drive since it a slow old device anyway.
Optical media is going to be dinosaur soon anyway. Its all going to be cloud based, you'll never need to store anything on your home computer ever again. Your alarm clock, your fridge, your car stereo, your PC, it'll all be able to access the web one day and you'll be able to access or control all of it from any location.
One day entire houses and office blocks will be controllable via the web. You won't ever have to worry about leaving the iron on as you rush to work because you'll be able to switch off your whole house from your phone.
Books, DVDs, movies, CD's, magazines, family photos, soon they won't physically exist.