Deflationary Business Models

I was interested to read a story about deflation in Japanese coffee dispensers in the FT http://www.ft.com/cms/s/0/d0bad846-ed91-11de-ba12-00144feab49a.html. This made me think about the tremendous amount of capacity overbuild in Western economics on the back of artificially low interest rates, and the concomitant excess in capacity. Would that not tend to suggest that we should also be seeing some interesting deflationary dynamics? What is novel is that unlike the deflation in goods that we have experienced in the past years - enabled by cheap Chinese imports - the new deflation might come in the form of services, which have for the most part resisted such tendencies. Some of the groups that have captured on this trend include players such as Groupon.com - who just snagged $30M from Accel and is based in Chicago, and Buywithme.com, which is based in Boston.