The infographics you see are made to order specifically to perform well on social sites and generate links for whoever commissioned it. Although it's technically feasible to make them interactive and a lot more interesting that makes them non-portable and defeats the only purpose they were created for.
[+] [-] benologist|15 years ago|reply
There's a great AMA on reddit about it -
http://www.reddit.com/r/IAmA/comments/d7e24/my_job_was_to_ga...