Not news: people cross-charge to where the budgets are
Everyone has to account for their time. If one project or cost-code has 70% of the IT budget, it'll attract 70% of the time allocation, whether or not the people in IT actually did any work in that area. So if supporting current systems has 70% of the IT budget then guess what? Yup all the sys-admins, support staff, cleaners and managers (listed here in order of importance) will charge their time to this category. If you reorganise things so that "special projects" or consolidation or innovation or any other dam' thing gets the lions share of the budget then all the BAU activities will magically transform themselves into that kind of work.
Ultimately all HP are saying is "your business is bloated, expensive, slow, inefficient and resistant to change - just like every other IT department". But if you spend money with them, at least it will look as if you're addressing the situation. In the end it;s the appearance of activity, rateh rthan the end result wich is important. After all, that's how we got into this state.