"The business model will be viable because by 2040, if AI revenue makes up 20% of global GDP, spending 800 trillion yen a year is a rounding error," Son said.

SoftBank CEO Masayoshi Son says annual AI investment could hit $5 trillion by 2040, driving growth in infrastructure, data centres, chips, and robotics.

TOKYO, July 14 : The development of AI will require investment of $5 trillion each year by 2040, and any talk of a bubble forming around the technology is "absurd", SoftBank Group…