That rather depends on how much people can afford to spend on bread. At least here in the UK, there's been a massive rise in the popularity of discount supermarkets like Aldi and Lidl which sell their own off-brand products that's gone hand in hand with the economic crisis. Also, it doesn't require a complete race to the bottom to ensure that bread is available at a reasonable price and the existence of premium brands doesn't cause non-premium bread to disappear.