Delaware? Any reason for that specifically?
Kind of like when Chrysler moved out of Highland Park (near Detroit) and they lost 80%+ of their tax revenue and never recovered.
edit: words
My understanding is that Delaware has strong corporate law with well defined protections for corporations and lots of case law to back it up from their Chancery Court. The huge history of case law is really what makes the big deal from what I've read because it makes contracts enforced there (which all shareholder contracts would be) much more predictable in terms of what's allowed.
Low taxes, few constraints for internal organization, and clear answers from lawyers stemming from a rich jurisprudential history.