I asked the last guy that raised a Stripe ticket on HN what they sold and they wouldn't tell us. Given lack of transparency seems fair to assume they've been deemed prohibited businesses by Stripe -- https://stripe.com/legal/restricted-businesses.
Every time someone posts one of these that seems to be the case. "Patrick Collison personally slapped me in the face and keyed my BMW for NO reason!" See comments where it turns out they're selling anthrax to baking blogs branded as instant yeast.