IAmSinistar: As an example, imagine a cafeteria where everyone pays the same price, but there is a small group of folks who are in cahoots with the manager and thus get rung up lower at the register whenever they shop there. To me the price they pay isn't the regular price, but a special favour price that only they get. If they stopped shopping there the prices wouldn't change. Nor would the manager suddenly change everyone's prices to what those folks pay, because it's not economically viable to extend the same special consideration across the board.
Not quite. People who are in cahoots with the manager still eat up the actual food and time of the personnel. But the Russian discount doesn't exist because the devs aim to please Russians, it exists because the devs want to maximize their income. That's it.
With perishable goods, a more fitting example would be shopping at the stale market.
For me, the choice is
(1) buy cheap junk food in the regular store, be sick, OR
(2) buy heavily discounted luxury food at the stale market, be healthy.
From the perspective of a luxury store owner, the choice is
(1) throw the unsold luxury food away, get nothing
(2) sell it at heavy discounts to stale market dealers, get something.
I bet my ass luxury store owners aren't exactly aiming to get into good graces of us hobos when they pick (2).
Disclaimer: I still haven't played a single regionally priced game in my entire life. I do, however, shop at the stale market. French soufflé FTW.