Well, not

The `we sell you the binary and support, or the software and you get to 
maintain it' is one of two approaches often used when the supplier is a 
small software house selling proprietary software to enormous behemoths. 
(The other approach is `we sell you the binary and escrow the code: if we 
go under, you get the code and poach our developers'.)

This sort of situation inverts the power relationships typical in the 
consumer software industry, where the software company is the behemoth and 
the users are trying to get some freedoms. In this case, the *users* are 
the behemoths and are trying to make sure that the supplier wouldn't put 
them over a barrel.