But I think for the most part B to C ecommerce is dying too. Before you react and say WTF are you talking about, what percent of your online purchases do you make that aren't through Amazon, ebay, and possibly a few other 'massive' brands like groupon, or some large retailer with an online presence?
All an ecommerce solution needs to be now, is gateway to posting to Amazon and Ebay. Very few people have their own web stores found anymore.
Amazon has so consolidated the ecommerce business due to their clearly superior service experience that its almost impossible to resist them as your primary sales outlet and pay them their 'toll' to be part of their system.