In a world where light can be created by a single spell, there would be no need to invent a light bulb. If magic can heal all injuries and ailments, advancements in medicine would be unnecessary? Even weapons of war would need no technological boosts if they can be augmented by people slinging spells.
It seems that with a magical counterpart to any level of technology, there is no need for technology to grow past a rudimentary level unless it were to do so in an effort to divest a civilization of its dependence on magic. But why would a dependence on magic be less desirable than a dependence on technology? Could a world in which magic is the norm ever advance technologically?