Why Did PS4 Sell Less Than PS3 in Japan?

[Otter]

IcaroRibeiro said:

The interest in handheld don't explain the decline of PS4, because handhelds sold less in that generation (DS > 3DS, PSP > Vita)

PS3 is the one that felt strong competition with handhelds, with PSP being the effective replacement to PS2 for many gamers

A decline in handhelds in one generation sales doesn't necessarily inform us on the lack of interest in dedicated home consoles, which I think is the better way of looking at it.