Very good point. One might think that if there is, in fact, a universal price rise in the retail prices of games, then game companies will ensure their products are to a certain standard.
However, all companies have different interpretations of what an acceptable 'standard' actually is.
I have no problem paying a little extra for your Metal Gears, Devil May Crys and the like, but won't look at average titles twice if they are retailing for the same price. Some sort of pricing system will need to be implemented in this case to combat this situation, otherwise some gaming companies are going to be massacred in sales.