If I have to deal with digital media I prefer to do it on one where hardware configurations are open and operating system isn't locked.

Digital media on a locked hardware platform that doesn't let you load your OS of choice or even programs makes for a more restrictive digital media experience.

You can, with a little effort, back up your steam install files. In the unlikely event that Valve pulls the rug users have the option to insure against it.

It's not a "physical media" issue, it's about monopolizing and raising prices.

Hard drives are physical storage.