They generally are, as each feature adds more work and there's only so much time and money available. While this isn't exclusively the case (some things are universal), the more you work on a feature specifically targeted at power users, the less you work on features targeted towards the general population.

For an app that's specifically meant for and targeting power users, that might be an acceptable choice to make, but if you want to target "people", then you're likely not going to be investing in power user features.