"It's no longer about how big you are, it's about how effective you are at reaching your consumers whether that's through a shopping app, an email, a text message or social networking."
As it turns out, some e-commerce startups were able to reap the benefits from their mobile efforts this holiday weekend.
Etsy, the online marketplace that allows artists to sell hand-made goods, saw more sales on Cyber Monday than any one day in its 7-year history, according to a blog post by CEO Chad Dickerson. But Dickerson added that almost one in three visitors to Etsy were shopping on mobile devices, compared to one in four on a typical day.
Mobile sales also played a key role during Black Friday weekend sales at the design daily deal site Fab.com. Weekend mobile orders accounted for 30 percent of total mobile orders, while mobile revenue 35 percent of total revenue, according to a Nov. 26 blog post by Fab co-founder and CEO Jason Goldberg.
Meanwhile mobile revenue at flash sales website Gilt Groupe hit 37 percent over Thanksgiving weekend, compared to 27 percent over the same period in 2011, Gilt Groupe CEO Kevin Ryan told Bloomberg TV.
"Flash sales have more mobile than almost any other type of site because if there's a deal, you have to get it now," Ryan said. "It's perfect for mobile."