nagewu Yes they can remove their videos at will. HardVR was one non-nude studio I enjoyed with a bunch of videos, all removed. Some can be found originally at Al Caudullo's youtube page - scroll down to dancing girls. The current SpiceVR has just 1 video, but there were tens more before. ZexyVR had a number of their videos removed, likewise with some other studios.
I noticed with Fantastica, 3 weeks ago, they released Mizuho Uchida - side A then took it down the next day and released Mizuho Uchida - side B. Side A never re-released; someone else noticed too and commented on the video.