I suppose this 2010 document could have been an early step in Softbank's bid to secure the $90B invested funds from Saudi Arabia and others, which was announced

I suppose this 2010 document could have been an early step in Softbank's bid to secure the $90B invested funds from Saudi Arabia and others, which was announced earlier in 2017. 2040 was perhaps the timescale around when Saudi was expecting to need substantial new revenues uncorrelated with burning hydrocarbons.