Why are people mad about this? Dude is a modern Robin Hood -- a national hero. Let him keep the $1.7B change.
He was in this to build an empire and a dynasty. He tried to write his family into leadership / ownership in perpetuity.
He wasn't freeing money from the "dumb, rich, foreign investors" for the good of the people, but for the good of himself. Anything that fell to the people was happenstance, and after he'd had first pickings.
They did invest in Alibaba as well as ARM and Uber and runs the SoftBank Vision Fund. They may have failed huge on this one but have been doing quite good.