I know that code allows for and even encourages this, but I've had this practice cause ground loop hum in a number of sites I've worked on. The solution was a separate green/yellow technical ground wire along with iso-ground receptacles. I'm not sure I totally understand all the code and practical implications, so we certainly should discuss it here.
Article 250 of the NEC requires conductive panels/boxes/raceways to be bonded to ground. But 250.86, Exception 2, exempts short runs of conduits/boxes/raceways where the primary purpose of the conduit is for protection from physical damage. Think sleeves through walls/floors/etc or stub ups from wall jacks up to above a ceiling space where the cable run transitions to free air.
Additionally, 250.96(B) Isolated Grounding Circuits allows enclosures to isolated from raceway systems. You still have to ground the enclosure or receptacle to your isolated ground, but you do not have to bond it to your raceways, nor do you have to bond your insulated, isolated ground to your raceway system. Code
does not require you bond raceways to
any/all grounding conductors contained within -- just that you do in fact ground the raceway system by one mean or another.
In my projects, I require racks/receptacles to be isolated, bonded to an isolated ground feed from the isolation transformer if there is one the project. Otherwise those isolated grounds are bussed together at a designated location before being bonded to building ground. Then raceways and boxes are bonded to building ground, and I don't care where that happens so long as the electricians do it. Typically you don't have to get silly about running extra non-isolated ground conductors everywhere because a network of EMT conduits will naturally bond most/all of the raceway system together on its own.
Have to be a little careful not to compromise your isolated ground though. Not a problem for most connectors but Neutrik's earlier etherCon connectors had removable jumpers so you could pass the shield through the connector for Shielded CAT6 without bonding to the panel. Now their new CAT6A connectors are going to bond to whatever they're attached to whether you like it or not. Options for mitigating this include lifting the connectors from the panel with heatshrink sleeves/rubber gaskets/nylon screws, or transitioning your raceway into the box with a dielectric fitting and pulling an isolated, insulated ground conductor to bond your panel and connectors appropriately without intermingling them with your conduit ground.