Could you elaborate? :) Because otherwise, you're possibly sending the same message as what I alluded to (i.e., we feel great because we're expecting a big exit).
Well, whoever buys them would like to keep the customers, as it is already a profitable business. So, even if they completely close the business, they should provide a way to migrate, as nobody likes to loose money/customers.
Ironically, these also make you a prime acquisition target (because the product idea rocks), which renders your long-term future unclear.