A question for sock philosophers

You know those wonderful soft squooshy socks they have now?  Like these?

Soft, cuddly socks

Exhibit A: artist's feet in delightfully cuddly socks

These are made of some magic knit material that feels like your feet are wrapped in clouds.

Why don’t they make entire sets of clothes out of the same stuff?

I want some soft squooshy pajamas.