I see one of 3 things happening. The following are in no particular order.
1. PS drops mobile altogether. By creating another handheld they may actually help to strengthen Switch.
2. Switch sells good enough and gets enough third party and indie support, so PS builds a handheld with similar arch to compete directly and allows you to play all of the same third party and indie games Switch has, along with some (mobile only) first party PS titles.
3. Switch sells like the Wii, "stealing" potential PS4 customers, so PS builds a handheld to compete, which runs the PS4 OS, has an easy to port to arch, and can play many, if not all games on PS4, just downgraded.
PS1 - ! - We must build a console that can alert our enemies.
PS2 - @- We must build a console that offers online living room gaming.
PS3 - #- We must build a console that’s powerful, social, costs and does everything.
PS4 - $- We must build a console that’s affordable, charges for services, and pumps out exclusives.
PRO -%-We must build a console that's VR ready, checkerboard upscales, and sells but a fraction of the money printer.
PS5 - ^ -We must build a console that’s a generational cross product, with RT lighting, and price hiking.
PRO -&- We must build a console that Super Res upscales and continues the cost increases.
