Young people are losing interest in high-end games and focusing on mobile and social titles, especially in Japan. I wanted to show people that Japanese high-end games are still worth playing and that big Japanese games still have a future.
While consoles are still going to be the default machines to play video games for a long time, the trend of triple-A developers leaving their jobs to work for smaller companies or starting their own companies is growing. Many just cannot handle the high-risk environment of making these games anymore., so they go to smaller companies for a slower paced environment and still make a bit of profit.
GamesTM also asked about why the Ground Zeroes version of Metal Gear Solid V was short. Kojima responds:
I’ll be honest, [splitting MGSV up] wasn’t necessarily a strategic move. The Phantom Pain is roughly 200 times bigger than Ground Zeroes. A game that big wouldn’t be ready for next-gen launch windows, and we didn’t have any Japanese titles that would be available. At that time, the Ground Zeroes portion was almost complete and a lot of fans were asking for a prologue, so that’s the decision we came to. That was the reasoning behind the move.
It still doesn't answer the question on why two versions of Metal Gear Solid V had to exist though, but it is going to be $29.99.