One thing to keep in mind about Playstation profit is the growing subscription revenue from PS Plus and PS Now. This can elevate Playstation profits into 4 - 5 Billion range yearly. In fact when its all said and done, the most profitable years of the PS4 will pale in comparison to the most profitable years of the PS5, and the lowest profitable year for the PS5 will still end up higher than the lowest profitable year for the PS4 by a sizeable margin.
IIRC, Sony is predicting about 3+ Billion profit from the Playstation division, which is unprecedented for Sony during a console launch year, because of the hit they take on hardware. This isn't even considering the $70 price tag, growing digital ownership, and even growing markets around the world. The profit the Switch is making in its peak year (2020) will be dwarfed by the profit the PS5 makes in its peak year.
