With this year's total retail sales expected to be up 3%, there is only so much growth to go around. With the stats from RetailNext on store sales, it seems as though everything has gone to eCommerce thus far:

Sales at physical stores fell 6.7% over the most recent weekend, while traffic declined 10.4%, according to RetailNext, which collects data through analytics software it provides to retailers. That is worse than the 5.8% decline in sales and the 8% drop in traffic recorded from Nov. 1 through Dec. 14.

Within eCommerce, Amazon has been the clear winner according to ChannelAdvisor. Google is seeing high growth in Google Shopping but that growth is largely as the expense of their lucrative Google Search business: