French luxury goods tycoon Bernard Arnault listed as world's wealthiest man for several hours before Tesla owner reclaims perch

World Inequality Report says 2020 saw steepest increase in global billionaires' share of wealth on record, while 100 million more people fall into extreme poverty

Arnault, the chiarman of Moet Hennessy Louis Vuitton (LVMH), is one of the world's richest men; together with US billionaire Howard Schultz, he joins in $120 million funding round