This is a projection they took from a weakly sourced article. A Huffington Post blog "article" states that the market is around $684M (as of 2014) and "a potent

This is a projection they took from a weakly sourced article. A Huffington Post blog "article" states that the market is around $684M (as of 2014) and "a potentially $500B industry." [0] But the real source that it cites can't be found on Mintel's website (maybe it's a paid publication?). [0] http://www.huffingtonpost.com/antonia-opiah/the-changing-business-of-_b_4650819.html http://www.huffingtonpost.com/antonia-opiah/the-changing-bus...