Recent experience with open source - Wordpress - Ready for enterprise?

Recently I was involved in setting up an e-commerce platform which included a mobile interface for both smartphones and tablets. The team chose to go with one of the most common platforms for this purpose these days - Wordpress. Thereafter a set plugins were applied to enable the e-commerce functionality, the theme which included the mobile compatibility, multi language support, payment gateways and other bits and pieces. While the project is not enterprise scale, I still took in the experience to try to understand how far away Wordpress is from actually becoming a feasible choice for the enterprise. The end result of what we setup you can find at www.mocycl.com - check it out, it may prove to be the Christmas gift of the year.