I don't think the two are related. They upped shipments because they expect demand to be that high, and that is the only reason. They wouldn't 'splash out' on more shipments just because they have more moneyI wonder if because of the fantastic first quarter results for Sony it has emboldened them to take more of a loss on the PS5 and is why they have upped the PS5 shipments to ten million?
They made 1.1 billion profit in the first quarter.
I also wouldn't be surprised to see them buy more dev teams, they must know that in the end content will be the most important aspect of getting people to buy into your eco system.
Instead, they'll invest those profits in other aspects, which can be anything really, from securing more games, to securing more and better marketing... could be anything.