Wait shouldn't it say "realistic loot"?
"Realistic" is a thorny term in a fantasy setting. Is it realistic to find dragon scales or magical runes? No, but it may very well be logical, depending on the setting and situation.
It's always a case of the tail wagging the dog, though. Every potion, trap, enchantment or piece of equipment is evaluated on "when would the player find this and how much gold would they, on average, have on then at the time?" Instead of "how much would this item cost in the world of Thedas?" Are runes and enchanted equipment that expensive to manufacture? Given that the Tranquil do it for free, it would seem that it wouldn't. And it would also seem that the soldiers of the Chantry (such as the Templars) would have cheaper or easier access to such equipment over the average soldier or layman. Or, conversely, the dwarves (who also are big on lyrium manipulation).
Instead, magical equipment is evenly distributed across humans, Qunari, dwarves, Templars, Darkspawn, spirits, brontos, giant spiders, GIANT giant spiders and nugs.