They have never sold refurbished consoles or used games.

Nobody except them knows what they will do in the future. They might not stock certain consoles if they perceive them to push too much toward digital. And yes, that would mean that they will tell customers to buy certain consoles somewhere else. I don't think they'll worry about losing customers for good, because their reputation as a games store is too good. People aren't going to stop buying games from them. A good chunk of their business comes from shipping PEGI versions (European rating board) of games to Germany, because USK versions (German rating board) aren't necessarily the same. There are lots of customers who don't turn to their store to purchase consoles to begin with.

Shelf space is representative of what a company is willing to pay for it. You can’t really blame Best Buy to reduce gaming space in their stores to replace it for more space in home theatre since it generates more revenue in general. Even with smaller space, they can still outbid their competition for the size of their sections. If their sections seems smaller, it’s probably because they don’t feel the need to invest more than what they already do.

You can make the comparison with GameStop, Sony’s investment in advertising in GameStop has always been bigger than with Best Buy, and you can see the difference, their sections are generally bigger since they invest more than the competition.

I'm guessing that they don't sell many digital games with retailers anyway.  So retailers might well end up pretty neutral.