Space Data Corp. has brought a brilliant idea into actuality. It operates 10 cheap, high-soaring balloons carrying electronics that turns them into the equivalent of 65,000-foot cell-phone antenna towers in the thinly populated American Southwest. Something like this just might make the task of bringing broadband Internet service to the 95 towns of rural Massachusetts that have little or none of it a lot cheaper than the $25 million for which Gov. Deval Patrick is seeking legislative authority to borrow. The balloons only last about a day, so Space Data launches 10 every day to provide cell phone service to...