This JenNet-IP reminds me of ZigBee. I think they actually compete in many ways. They both offer mesh topology and the ZigBee-IP supports IPv6 also. The same IEEE 802.15.4 radio is used.
Seems that JenNet-IP is just different because its not a standard but a proprietary solution. I think a protocol being a proprietary one will have a tough time competing against a standard.
Though... what I see is a good move is that NXP open sourced it and it enables development in an inexpensive way by the GNU C/C++ tool chain for their chips, and under Eclipse IDE... nice!