I.T. departments can become profit centers for the enterprise
When customers are looking into a SaaS offering, they usually overlook the infrastructure that the software is running on; and for good reason: They don’t care in which platform the software runs, what kind of servers it runs on etc. as long as it performs as it is expected to. There are some SaaS vendors that run their service from owned infrastructure and some others that also receive IaaS or PaaS services from third party providers. Which leads me to the following thought: Anyone (any I.T dept., that is) with an infrastructure robust enough to offer a good Service Level, can potentially offer and host SaaS services for new customers, outside the strict boundaries of the enterprise.