My friend runs an indi games shop and has said if the XboxOne really is online all the time and wont allow second hand games he simply will not stock it at all. For him there is practically zero profit in new hardware and games.... the supermarkets discount so much that they often sell them for MORE than he can buy them from distributors!
He will focus solely on Ps4 and the second hand market for that as well as the ps3 and 360 + retro.
MS will suffer badly if they do go ahead with the stamp on the second hand market, he has already seen a massive surge in ps4 pre orders and people cancelling xbox orders.
supermarkets are the future tbh, they are pretty much increasing their market share daily from independent small stores.
imagine 20 years ago if you said you could buy pretty much anything you need all from 1 shop from fresh fruit and veg to bedding to furniture, tv's, clothing, candles, frying pans, to alcohol, people would have thought you were mad, but supermarkets are just getting bigger and bigger, their buying power is immense, they now dictate prices to their suppliers rather than the other way about.
imo this is bad for us as they will stock what suits them rather than what suits us, but on the other hand some things are now a lot cheaper to buy.
but i expect in 20 years time physical copies will be a thing of the past and you will need to download them, meaning the second hand market is dying, meaning your mate wont have a job/shop in 20 years time.
the only problem with that is that the download stores on consoles are HUGELY overpriced compared to physical copies, if they can make downloads cheaper than physical and drop the pricing according to the market rather than keep the same price for 5 years, take COD, it's still like £50 from PSN, in a shop probably half that.