Hi. Here's an update:
Chris English (very helpful Adobe sales rep) put me in touch
with Steve Chernoff (Adobe software engineer) to answer some
questions we had.
In addition to it being a very positive and informative
conversation, he brought up a good point; because FDS is not simply
a bit pusher (like FMS which is being hosted by some companies) it
would be very difficult to offer all of the elements that would be
necessary to host "just" FDS. And typically, Flex developers want
to retain control over all of the elements of their RIA development
and keep them in-house.
In short, he said it is not something that they are currently
planning on offering as a host-able product.
Thanks for the help Chris & Steve.