WILMINGTON, DEL. :In the coming weeks, investors in nine public companies worth at least $1 billion each will vote on proposals to ditch Delaware as their place of incorporation, potentially denting the state's longtime reputation as Corporate America's capital, Reuters has found. Five companies with a stock market value of at least $1 billion have moved their legal home out of Delaware since last year, in what some have nicknamed "Dexit." Tesla made a high-profile move to Texas last year and