Perhaps a different perspective? I am a long time ~1/12ish scale collector, typically staying at 1/10. I realized, with the GOTG legends wave that 1/12 does not fit with anything I collect, and I've had a hard time displaying the set with anything I have up. I've been buying in on the Star Wars Black Series, but the set is self contained, so it's okay. The last true 1/12 series I collected was ToyBiz LotR.
That being said; I just got my first 1/6 Hot Toy on Friday; and I am not torn from my 1/10 roots, but have a new appreciation for the category and will adjust my collecting accordingly. I think the Black Series is out the window for me save for a figure here and there, and I'm going to remain picking and choosing 1/10 from NECA as I had been (they're what keeps up best with my high end product now). At this point, I will funnel more budget to 1/6, admittedly.
I have my Hot Toy in a detolf cube of it's own, and my other figures about it in other shelves. It's a nice breakup; mixing scales (as long as they are not on the same shelf, as best as possible) makes for a very visually appealing display. I think the exclusion to this is a solid 1:1 ratio of 1/6 Figure to detolf cube. I LOVE that set up.
Just as 1/6 did not replace 1/12 when it got big, I don't think 1/12 will overtake 1/6 now. With that being said, I think the 1/12 Collective is an extremely niche market; it will thrive, just not overtake the market as people are expecting it to. I'm sorry, a properly articulated (read: hidden articulation) will look just as good on the shelf, and $20 vs $60 presents no contest.
For example, say Mezco brings out a ~$60 Walter White in 1/12. There are stores retailing the ThreeZero Walter for ~$115. I think the latter presents itself as a better "deal". I think for these to go anywhere BIG, they need to bring them under $50 a figure, plain and simple. Heck, under $50 might have bought the figures a bit of limited brick and mortar space in limited TRUs.