I'd have to think the internal risk team at SoftBank is not going to do anything but 'warn' the partners. If the parnters believe in their own koolaid ... (hey, we are 'world class investors, look how much money we raised') it's an easy trap for them to fall into.

Paradoxically - even just being a 'true series D/E fund before IPO' is a really great concept, they should stick to it. WeWork, Uber etc are actually good investments if managed properly. If they reigned in Adam at WW it might have worked out better.

Softbank has gone from 0 to $20Bn day trading in 6 months. I doubt their riks management is up to scratch to be honest. It's one thing to be evaluating single large long-term investments with seats on the board etc. It's quite another to be day trading options.