I think they can, but then they must at least sell more formats/games than their CNA/Game/Makro/Reggies/IC counterparts. Even if the pricing is similar , if they have imported games like [to take an example] : Final Fantasy ..i would use them.
The other more diverse shops usually only keep the current "top 10" + "cheap platinum classics" on their shelves. The moment you go and look for something
more obscure/older/non-mainstream they don't have it.....again a simple example is try to find something like Fallout ..usually it's pure luck.
BTGames is mainly selling games and the applicable hardware, no idea how they are doing. I usually go there if i look for a game becuase i know if they don't have it [but CNA/LooknListen do] then there's something very wrong. Although i haven't noticed games in their store that i couldn't find in CNA/LooknListen.....
I do however like how they have that "Coming Soon" section where you can pre-order games
Of course things like these i would expect at a true game shop:
1. Second hand/swop out games (BTGames have this)
2. Rental of games (BTGames have this , i haven't used it yet though)
3. Ability to get new releases when the rest of the world get them (Touch and go, i have had better luck with online e-tailers who can import the game i.e.
www.take2.co.za).
4. Get the odd classic that is no longer stocked in other shops (Seen a few in BTGames, although not the ones i looked for, they only stocked the ones that were re-released in a "collectors/combo" edition).
5. Other services i haven't thought of yet [demos ? online gaming services? download services? ] (No idea)