This is pretty much what the future of fast food restaurants is like when you raise the minimum wage:
http://www.businessinsider.com.au/mcdonalds-australias-upsca...
McDonalds is usually able to adapt better to changing market conditions than other restaurants.
Many restaurants do go out of business when their prices rise, which is why they hate the idea of raising the minimum wage so much. However, those restaurants are quickly replaced by other restaurants, which is why employment is never affected.