[vlovich123]

At a minimum this is done diligently for Apple-written software.

For foreground apps like electron actually this wouldn’t do anything because you generally want it to be foreground. However, various extensions probably should use a different QoS level because responsiveness is better (eg code indexing, builds, etc).

The incentive is a better user experience and a lot of times software engineers end up using the software they’re building so the self interest incentive exists. And developers also exist who view it as a craft and push themselves to write better software.