Is you have a spare USD300,000-USD500,000, Electronic Arts would most likely be willing to discuss the release of the WC1 or 2 source code.
With a royalty fee for it's use as well, I would bet

Generally speaking, Electronic Arts are a company that very rarely licenses its source and/or engines to other companies (this applies to all companies EA have bought out).
Of course, getting more recent engines (eg, Vision) would be more of a task, since they're still profitable to EA (and anyone else who wished to use them).
The only engine source that EA share is that of the EA Sports NHL/NBA/NFL/AFL with the various subcontractors that do each game.
Fear not though, with the size of the WC exe, it can't be more than about 65,000 lines of code
