Employers Look For Geographic Diversity

The Boston Globe reports employers who don't want to hire too many people in the state of Massachusetts :

Long a mainstay of the Massachusetts economy, employment in the financial services sector has taken major hits in recent years from an economic slowdown and mergers that eliminated the headquarters first of BankBoston Corp. and then of FleetBoston Financial Corp. From a peak of 55,200 jobs in 2001, there are now just 46,800 people in employed in securities, commodities, and investment services , state figures show.

Joseph D. Alviani , a former Massachusetts economic development official, said the state's population trends will make it harder for the sectors' numbers to recover because of companies' concerns they could become too reliant on the local workforce.

Why would any company want to have any middle class jobs in Massachusetts with its' high costs?