This ruling is wrong in so many ways. It is indicative that the authors either have very little knowledge about beer brewing or are heavily influenced by the large commercial brewers. There is not enough farmland in Massachusetts to meet this requirement. It is a sure fire way to kill economic development and jobs.
It is unfortunate that regulations and licensing are often used to hinder new businesses from entering the marketplace. For instance, consider the law in Minnesota that says if you want to start a new moving business you need to get the permission of the existing moving businesses. As you would guess, Minnesota is bereft of new moving companies. The legislature passed a law to remove the requirement, but he governor vetoed it, so now it is going to court.