You realize that in order to play VR games, you need to invest quite a fortune in the rigs and the VR headset, which could reach over a thousand of dollars. Not many people wanted to spend that much money on something, except the enthusiast or someone with good income.
Fortunately, Sony tries to break that barrier by introsucing a cheaper option of VR tech, with their PSVR. And the current reception was very positive, with PSVR being the current biggest seller. They also started to make quality games, like Firewall Zero Hour, Astrobot, or even integrate it with popular games like Wipeout, RE 7, or Ace Combat 7.
But yeah, you need to wait for a couple of years in order for the technology to be matured and become more accessible. And when it reached that point, you'll start seeing big companies pumping VR games like no tomorrow.