The best way to address tensions over income inequality, Pinchuk said, is for conference-goers and complainers to chat.
"The Davos men are ready for such a dialog, even more than the occupiers," he said.
Some of those occupiers moved into what they call "Camp Igloo" in Davos, where 155 centimeters (61 inches) of snow was on the ground yesterday, the second-highest level recorded for a Jan. 24 since the Institute of Snow and Avalanche Research, based in the ski resort, started keeping records 66 years ago.
"This year, we will not let them exclude us, the 99%," the group, OccupyWEF, says on its website.
O'Brien, the Irish-born chairman and owner of Digicel Group Ltd., a Kingston, Jamaica-based mobile-communications provider, said the Occupy movement deserves encouragement.
"They believe the financial community has behaved abominably, and some of them have," O'Brien, 53, said in a phone interview from London this month. "They are serious people who have taken a stand, and they should be engaged."
'Last Continent'
O'Brien, whose company is worth about $4 billion, according to data compiled by Bloomberg, plans to spend much of his time in Davos encouraging European and Asian firms to build factories in Haiti, where 80 percent of the population lives in poverty, according to the Central Intelligence Agency's World Factbook. Digicel, which has rebuilt more than 50 schools in the country since a magnitude 7.0 earthquake in 2010, is the island's biggest employer.
"Corporations need to engage in giving a chunk of their profits to social issues," O'Brien said.
Some billionaires aren't interested in talking about income inequality or the Occupy movement at Davos.