I second your industry suspicions. There are probably also some niche subscription businesses out there like CandyJapan (http://www.candyjapan.com/candy-japan-c

I second your industry suspicions. There are probably also some niche subscription businesses out there like CandyJapan (http://www.candyjapan.com/candy-japan-crosses-10000-mrr http://www.candyjapan.com/candy-japan-crosses-10000-mrr) but at larger scale.