To be clear, there is no such thing as a passive staker in the ICON network. An ICONist will need to stake their ICX to Reps, EEPs and DApps or risk missing out on I-score.
An example would be one who stakes all their ICX to P-Rep A, EEP A, and DApp A, but never changes it.
This could lead to missing out on I-Score in the event that DApp A goes out of business and you don’t re-delegate, EEP A comes to an end and you don’t re-delegate, etc.
Currently, staking and delegating is only available to the P-Rep category.