Dan Kennedy’s new book, “The Return of the Moguls: How Jeff Bezos and John Henry Are Remaking Newspapers for the Twenty-First Century,” is more than just a look at how two highly regarded newspapers are adapting to the way we live now. It’s also a clear-eyed, often bracing inquiry into whether modern business realities and habits of mind can coexist with the high-quality journalism that’s driven American civic life for decades. Kennedy, who’s a WGBH News contributor, discusses his conclusions with WGBH News reporter Adam Reilly and senior editor Peter Kadzis, both of whom he previously worked with at the late, lamented Boston Phoenix.