While I understand that the hardware companies want the home consoles to sell better in Japan. I understand as gamers, we want to see consoles sell well in all regions. But the truth is, home consoles don't fit into the on the go lifestyle very well, just like PC's don't. This is the reason why gaming in Japan has become so handheld and mobile device dependent.
Expecting the PS4 to sell the way that PS2 did in Japan is like expecting the Vita to sell the way the PSP did in the North America. Not that either system is bad but the markets have moved on and the development scene has changed. When the PS2 was out, while there were some JRPG's and Japanese focused games on other platforms, the vast majority of Japanese games were on PS2. PS2 was the development platform of choice by a long shot. Nowadays gamers and developers have more devices to choose from.
Last generation, even though PS3, 360, and Wii were really big globally and sold insanely well, we saw many of those more risky, more niche, more off the wall, and lower budget JRPG's hit the portable systems. Much of this was due to a lower development cost. It was also because the Japanese audience is more on the go then the western audience and gaming on handhelds takes up less space. This generation, we have the inclusion of mobile devices which have stretched the market even more with even less games being developed for the handhelds. This also helped to decrease sales of handhelds and, in the case of Vita, destroyed it's market in the America's.
Luckily, this generation, we're seeing Sony, Microsoft, and Nintendo working hard at making development across several platforms under their respected families easier. This means, Sony already has several games on the way that are on Vita, PS3, and PS4. Microsoft has several games coming out on XB1 and PC. Nintendo is slowly getting there with Wii U and 3DS with a few games finally popping up and next system rumored to work around this concept.
In the end, don't expect all platforms to do well in all regions however in the future, we can expect what comes out on 1 platform for a company to also be on all their other stuff. All 3 consoles companies are moving to an Apple/Google style system where 1 game works on all devices.
