I'm a former Capita employee. Internally, by the time your idea has been discussed across the thirteen departments involved with implementing it and it's been

I'm a former Capita employee. Internally, by the time your idea has been discussed across the thirteen departments involved with implementing it and it's been OK'd by a committee, its pros and cons weighed up between a pile of alternative vendors and the delay of requisitioning some virtual machines for it to run on, you've already solved it, thrown something live on AWS (or the server in the corner of your IT dept's cupboard) and moved on with your project. It's just slow and painful to the point where internally people avoid process. Externally, they can't. They'll have used some massive heavyweight CMS to write plugins to achieve what a small team of decent Django/Rails devs could have written from scratch in a month.