I would've identified the top two benefits of a managed solution as:
- Lower Cost
- Fewer Skills/Knowledge Required
(Hiring, Training, Employee Turnover, etc.)
Another interesting point is from question 12 - biggest barrier to outsourcing IdM. If you take away the top two concerns by leaving infrastructure and data on-site and limiting external access to sensitive data, the top concern is cost - which was also identified as one of the top benefits. So is there confusion about whether outsourcing cost more or less? Or is it listed as a barrier to changing the way things are done today (as in, I need to find budget)?
Check out the results for yourself to do more digging.