I think the "problem", if it can be called that, with JAV VR is the push, need, desire the directors and probably more so the producers have to make heavy content instead of plentiful content. These titles coming out that are even 60 minutes long let alone 200 are way bigger than even hours long FHD titles. They have to be due to the dimensions and bitrate, mind you. 120 minutes at 6000kbps for an FHD title, depending on content can be between 5-6 GB give or take. The last BIG title I got was the Hitomi VR title MDVR-092 which came in all in all at 39.6GB for right at 3 hours of content (2:55:10).That certainly is a nice lineup! 200 minutes!? The bandwidth I tell you!
Granted, at 4K 4320x2160 60FPS 32.5 Mbps the smallest scene of 14 minutes by itself was 3.26 GB. That's basically a full 90 minute FHD Idol title, pretty much. I'd much rather have smaller scenes for these titles, that way they can keep VR going for a very long time! That would help gain more interest, no? So, say your favorite star, we'll take Hitomi and this title as an example, they could have filmed all the scenes, there are 8 here, and released them two at a time each month for 4 months. Letting the fans salivate each coming month for more content. This title is 1280 Yen currently, that's less then $12 USD. By comparison, a random newer title KIWVR-151 is only 65 minutes (1:05:00) and costs the same 1280 Yen. Don't get me wrong, I'm like you and would rather pay the same amount for more content, but, the size is just a bit too much to take, IMO.