[danaris]

There's nothing special about Sony's store—the point is that, just for instance, many people own a Playstation of some sort, and want to watch movies through it. For some (nontrivial!) percentage of those people, the Playstation is the only thing hooked up to their television, and thus the only way they can—or know how to—watch a movie on their biggest screen.

Furthermore, Sony is the exclusive source for movies distributed by Sony. If someone wants to watch one of their movies—I don't know which those are offhand—they will need to buy it from Sony (or, at the very best, buy it from some other store and their money still goes to Sony).

In either of these cases, yes, they could choose not to do that. But if you've just gotten home from a hectic shift at your second job, microwaved a ready-meal for yourself and your kid, gotten them to bed, and finally have an hour or two to relax before you have to go to sleep yourself...are you really going to be willing to go out of your way to find some other way to watch the movie you want to watch? And more and more people are finding themselves in these sorts of situations in recent years.

Most broadly, my point is that for any given (major) store, there are people for whom their preferred "small luxuries" come from there, and asking them to give that up in order to try to make a difference that probably won't happen (due to my point (b) above) is likely to be a very hard sell.