Marijuana is growing up. As Colorado and Washington’s recreational marijuana industries blossom and new markets in Oregon and Alaska begin to take shape, so-called ganjapreneurs are looking for ways to take cannabis mainstream. Before long, they hope, marijuana products will be as widely available as alcohol – and just as socially acceptable. While marijuana businesses may have dreams of mass market sales and global domination, for the moment, they seem to be taking the "go slow" approach.