Almost anyone can write free verse if they are indeed inspired put words on paper.
When you string the very best free verses together, you get beautiful prose or prose with poetic overtones.
I’ve written prose. I then broke them into selected fragments and thereby transforming the composition into free verse. Perhaps what I’ve done was extreme but it did reinforce my point. Conversely, I’ve also composed free verse without prior composition of prose. Free verse is closer in style to prose or in its simpler, direct form, closer to spoken communication.