Being a billionaire and losing 99 per cent of wealth might not make many happy but SoftBank chief Masayoshi Son feels otherwise saying such an event helped him ‘feel the joy of work and value of money’ again. Son, one of the world’s richest individuals now, saw almost his entire wealth being wiped off in the wake of the ‘dot com’ burst in 2000 as Softbank’s market capitalisation plunged from $200 bn to just $2 bn.