Look up the word "unsustainable" in the dictionary and you'll find a picture of Sony's operating margin.
This is all the evidence required to see why Sony's "GAAS Pivot" represents practically a "categorical imperative" (apologies to Immanuel Kant) for the company's financial future.
What this tells me is that the "prestige" AAA story-driven titles for which Sony has become famous certainly do generate quite a bit of revenue, but there appears to be a hard ~$20 million ceiling to that revenue (because they contain very little if any post-release monetization) and that they cost a helluva lot to make.