I’m also guessing the new genes don’t propagate to the seeds as well, so that they can have a steady demand for their special flowers.
My impression from other stories is that they are certainly preparing commercial release, they just stopped the experiment (somehow there is scientific involvement see https://pub.confit.atlas.jp/en/event/ihc2026/presentation/S1...). They had an earlier 'blue' rose var "Applause" - which in the photos does not come close to this strange one https://www.suntoryapplause.com It was apparently used only by commercial growers for superfancy florists.
Blue or blue-tending flowers photograph really badly, on Kodachrome as on the internet, so nothing is to be really credited til you see it in life. If you type 'heavenly blue morning glory' in the browser you will see faked images - the real thing is nevertheless perfectly astonishing.
In general a blue effect, like the Heavenly Blue or the astounding mecanopsis, Himalayan poppy - once seen, never forgotten, in USA grown in Pacific NW only - involves more than just pigment but other ancillary curiosa like ferric ions trapping unfriendly wavelengths. The gene splicing was from several 'blue' flowers, but in some cases, if I follow, they were targeting these ancillaries, not the pigment.