Re: Cost is the smaller concern
Will you be able to find a company capable of, and willing to, take on someone else's hacked and undocumented spaghetti code? If so, will they charge you less than a commercial supplier would for support?
YES. Open source code being available that "alternate support" will also be cleaner and cheaper.
Will you be able to find a company capable of, and willing to take on someone else's hacked and undocumented spaghetti code from a proprietary company?
NO. The code is not available.
Biting the hand that feeds IT
