The Zumwalt is very similar to Commanche helicopter, only difference being it actually entered service. Since those things are too damn expensive to just prototypes. The technologies used in them are too avant garde and too expensive. Indeed they are full fledged battleships, but it is still very pan-experimental in nature. Thousands of new technologies will be tested on them and then matured, hence the cost drops so it could reborn through other programs. Although models like the Commanche, YF23, and Boeing X-32 have all been cancelled, it doesn't mean the effort was wasted. Instead, they reborn through applying the technologies verified and experienced gained from their R&D into other related programs.
Zumwalt and Commanches are too expensive to mass produce. But just like the so called "silent hawk" used in killing Laden, which definitely inherited technologies pioneered from Commanche, the mass produced successor of Arleigh Burke, perhaps even soon-to-be-built new batch of Arleigh Burkes will adopt those technologies. Since Zumwalt is too damn expensive to be built in large numbers, there must be something built to take its place. The mighty USN cannot cruise around the globe with only 3 Zumwalts and its A Burkes. Don't forget, although A. Burkes are still very advanced, they are no longer generation ahead of the 052C series destroyer and its soon to be launched successor (perhaps 052D or 053). This is unacceptable for the USN. The Pentagon's ideology since the mid-cold war is to always be a generation or two ahead of its rivals. In order to achieve the shock and awe effect, just being more advanced without generation gap is simply not enough.
This is my analysis, what do you guys think?