The only business that actually has substantial value, apart from the other techy startups the SoftBank Group has invested of which many of them haven't even reached the summit of the burning phase, and generate cash flow from outside Japan now carries meaning more than as a mere investment portfolio.
They're not going to surrender their shares in ARM so easily from now on as it became the girder of the fragile bloated group. Mismanagement will continue. Such a great misfortune for the semiconductor industry.