For me, NAM is not the future, but almost the past. Yeah, it´s great... but let´s face it, static capturing is already a mature tech. Capturing has to evolve into hybrid solutions, parametric, tweakable and whatnot.
Besides, NAM is still too CPU hungry to be easily implemented in cheap units. It has to be optimized. Or... wait a couple years to hardware to have enough power for cheap. And gain calibration will never be fully implemented until the user could solve it without studying "how-to" guides.
Fractal featuring NAM support means a risky step for them, I think. At some point, they´ll find sounding the same as a 300€ unit. Sure, they´ll still have over the top sim algos to keep the edge over the competition, but in absolute terms... NAM sounds equally good (if not better). I also think that Line6 has realized about this and that´s why they went for their own capturing tech. Knowing the capabilities of Line6, they´ll surely evolve much faster and will probably take the leadership in that field. If you think about it, all their competitors (in capturing tech, I mean) are much smaller (IK, NDSP, Kemper... NAM). If they manage to build a good capturing platform, in a few years they´ll be ahead of everyone.
Of course, I´m just especulating here.