Most large enterprise systems that are more than a few years old tend to be pretty bad, and almost all of them work just fine, as long as you respect the 'dragons be here' signs and you don't attempt to fix that which isn't broken.
Millions of lines of code (or even 10's of millions of lines) are really not all that exceptional. The original programmers are typically in some home or are pushing up the daisies.
Millions of lines of code (or even 10's of millions of lines) are really not all that exceptional. The original programmers are typically in some home or are pushing up the daisies.