I agree on photos, but when I hear "larger media library" I assume we're talking video content, both family videos taken on phones and commercial media (TV and Movies). Maybe I'm misreading but either 200GB or 2TB are both very small for a whole family's collection of video media.

Are you thinking of their television shows or movies or something? That's not really a use case here.

Honestly, most families do not maintain a digital collection of media. And I say that as someone who does. Most families just have a netflix or prime or apple tv subscription, maybe cable. If there's a collection, it's probably DVD or Blu-Ray still.

Does any significant slice of the population store TV shows and movies on their phones or laptops?