To create a rolloff curve with a capacitor, there also needs to be ohmic resistance nearby to create an RC time constant. Ohmic resistance decreases Q, normally. You can add RC stages to make the rolloff curve more acute, but you probably lose as much as you gain.
Although inductors are troublesome to work with, they are a component that achieves remarkable things, especially in combination with a capacitor, and with minimum resistance to hamper their behavior. That is a great method to multiply Q.
The potential of inductors seems so large that sometimes I get the idea that the world (electronics world, that is) belongs to those who are experienced with inductors, constructing them, using them in small signal applications, motors, power conversion, etc.