Hint: Communications breakdown
See the answer below.
This type of installation is an all-to-common sight for me. The installer of the CATV and communication cables took the easy way out and simply hitched a ride along the existing raceway. While some of these cables appear to be supported independently of the metal raceway, there are some that are secured to the raceway itself.
Section 800.133(B) prohibits communication cables from being strapped, taped, or attached by any other means to the exterior of raceways as a means of support. In the same fashion, Sec. 820.133(B) prohibits coaxial (CATV) cables from being secured to the exterior of raceways as a means of support too. Independent supporting means must be provided for these cables.
While Sec. 800.24 and Sec. 820.24 both make reference to Sec. 300.11, the rules in 300.11(C) would not be applicable in this situation since these cables are not Class 2 circuit conductors installed for controlling equipment connected to the raceway.