The changing in the economic cycle often ushers in whole new genres of products that fit with the new times. Or, a product that was in circulation at the margins of the market suddenly gathers greater popularity as the changing times bring it into greater relevance. For example, think of all the services that have grown up during the years of plenty from 1994 to 2007.  Dry cleaning services that collect and deliver. More and more takeaway food options. Then there are even services that bring you restaurant cuisine to your home parties.