ON a frigid evening in February, the hottest place to be here was the Kremlin Palace theater. The draw inside the towering hall wasn’t Tina Turner or Deep Purple — rock icons well past their prime — but Gazprom, Russia’s most powerful corporate leviathan, which was celebrating its 15th anniversary.

Gazprom certainly had reason to party: its chairman, Dmitri A. Medvedev, was riding high on the Russian campaign trail as the hand-picked successor of President Vladimir V. Putin. Although Gazprom forked over a handsome sum to book Ms. Turner and Deep Purple, Mr. Medvedev’s favorite band, the opportunity for the company, the world’s biggest producer of natural gas, to have its own man installed as Russia’s next leader was priceless.


“The gig at the Kremlin was fun, but it wasn’t wild,” Ian Gillan, Deep Purple’s frontman, wrote in an article for The Times of London after the show. “The young guys and more junior staff were all up on their feet, although they were looking nervously over at their bosses to see whether they could loosen their ties. It was as if they were asking, ‘How much fun are we allowed to have?’ ”

Mr. Medvedev was sworn in as president on Wednesday, after winning the election in early March, and his ascent confirms that in today’s Russia, the line separating big business and the state is becoming so fine that it’s almost nonexistent.