No two businesses have the same needs. One of the interesting data points for the Frakenkernel is the smaller companies with specialized hardware that is produced in such low volume that creating and integrating drivers is done once a decade or so. They want a kernel that will work with that driver for a decade without changes while they still have the ability to upgrade their environment. The Frakenkernel has a lot of viability in this low use high cost hardware proposition and there are a lot of companies and businesses with this type of specialized hardware.
I haven't looked in a number of years but I thought Redhat offered support on their Frakenkernel and Vanilla Kernels for those that want to run them.