In my session at FISPA live I used some data from a study that Parallels did. Parallels own CPanel and is middleware for hosting companies to sell cloud services from third party vendors. They do a global study on cloud for SMB. You can get the data here.
Lots of interesting data that I included in my session on Bundling for Sticky Profit.
The top verticals in the US via Parallels blog:
"The first post will feature the Retail vertical, representing more than 1 million SMBs in the United States. We’ll dig into the juicy details in the retail post. And we also will be covering five other key verticals, including:
Professional, Scientific, and Technical Sciences (850,000 US SMBs)
Healthcare and Social Assistance (816,000)
Hospitality, Food and Leisure (648,000)
Finance, Banking, Insurance and Accounting (467,000)