I expect this to come out of China first. Just like the genome edited babies.

I have a suggestion that I think would make this market more attractive. I'm not sure the initialism IVG is commonly associated in people's minds with "making gametes out of stem cells in the lab", so maybe explaining this right in the title would attract more traders :)

I think ethical concerns and regulations will make this impossible

This has already been accomplished in mice, but has yet to be accomplished in humans.