We all know about the downside of political polarization, but what about the upside? For instance, if “go woke” means “go broke,” who gets the money instead? For those paying attention, there’s a silver lining in the red-blue rumble. Conservative boycotts against brands such as Bud Light, Disney and Target have hit hard; in the last three years, for instance, Disney stock has fallen 40 percent, even as the S&P 500 has risen 25 percent. Less noticed, but perhaps even more telling, has been the decline of BlackRock, the Manhattan-based investment giant that has bet big on environmental and socia…