Why are featured artists such a staple in Hip Hop while in other genres they seem to be much less common?

Question

With the exception of more recent Contemporary R&B (as opposed to 50s and 60s R&B/Soul) and mainstream pop, Hip Hop seems to thrive on features in comparison with other genres, even other traditionally African American genres (which, by way of community, was my initial hypothesis on why it visibly features other artists, as opposed to just casually employing them in the more general liner note credits)

In: Other

Answer 1

Talking with a beat is easier to implement than other kinds of music, its also more distinctive