There aren't many corporations in the world that are interested in the idea of investing "billions," possibly 10's to 100's of billions, to start a fad they hope would catch on as well as the hula-hoop or the slinky. What's required is a steadily growing interest and a steadily growing product. Walking around with a vial of lunar dust on a necklace, like gypsum from White Sands, may be way-cool, but it won't pave the way to the planets, and it won’t open doors to the stars. Gimmicks won’t work. Neither will pilotless drones on sample-return missions. Solid research into human DNA-shielding to improve the tool (us), and solid research into state-of-the-art, comfortable, affordable human space flight will.

Cheers,
Dan