|Pyro as Bill said:
They could still run the game from the HDD but if they wanted the fastest load times they'd need to copy/transfer to the SSD. Last gen games and smaller current gen games would all load at the same speed they do now from the HDD.
The type of development they want to use the SSD isn't only reducing loading time, if it was for that they could just avoid SSD at whole.
There is no point in running from HDD as that would make the games being planned unplayable.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
Azzanation: "PS5 wouldn't sold out at launch without scalpers."