Don’t some clothing stores also destroy all the clothes they discard so that they can’t be resold?
I have also heard big box retailers (i.e. Best Buy) will destroy unsold items to discourage employees from purposefully hiding or down-selling things in the hope they can grab it for cheap or free.
Though a lot of places will unload these items to wholesalers or discount retailers, and some gets donated to clothing charities. It goes through a few steps first.
Makes me unbearably sad we're such a wasteful species.