You still need people to develop the custom apps, create user accounts, write company-specific documentation, create custom fields, create the workflow rules that help move external paper-based processes to the cloud, interface with the IT to support legacy servers and processes, advocate for the users when IT pushes back and says you don't get the data you need b/c [insert territorial/job security reasons here], train users, help determine what processes and data should be in the cloud vs. what shouldn't, make partnering and add-on decisions, and advise upper management.
There's still a need for an admin, but he or she can't just focus on the technical aspects. They have to know their system, and also know their users. A cloud admin is still an IT-type position, just one that requires the ability to understand things that aren't necessarily related to IT.