Again, it's a funding thing. They say 'We're cancelling this' or 'We're cancelling that', and most of the time it's because they want to get funding. The Land Warrior system has been touted for years, and the Soldiers who've displayed it seem to be comfortable with the amount of weight they're getting saddled with. So if the soldiers are okay with the weight, the system looks pretty easy to use, and it's a popular system, why kill it? Well, they want additional money someplace else, obviously. So by axing the funds there, they can get the purse strings to open up a bit more.
It's hard to do new fielding initiatives and Research&Development during times of war. Heck, the XM-8 by H&K was well on its way to being the next rifle, but due to costs, we're stuck with the M16 thanks to a lack of funds due to the conflict.
I mean, look at the F-22. We had to scale that back drastically....