SAN FRANCISCO — Let’s say President Barack Obama gets his way and high-speed Internet service providers are governed by the same U.S. regulations imposed on telephone companies 80 years ago. Depending on whom you listen to, the rules could unleash future innovation and create jobs — or stifle innovation and kill jobs. The divisive and often confusing debate has intensified now that Obama has entered the fray. Obama’s stance is meant to protect “net neutrality,” the concept that …