Calvin Ayre – Much has been made of the enormous potential of Japan’s casino market, including throwing out estimates on how much gross revenue the country’s (future) casinos can earn in a year. Telsey Advisory Group’s Senior Gaming & Lodging Analyst Chris Jones recently issued a 44-page analysis of Japan’s casino potential. Jones estimated that the country could stand to earn as much as $23.8 billion a year, which translates to 0.4 percent of the country’s GDP, roughly what US casinos earn relative to America’s GDP. A far more conservative, if not more likely estimate would be about $16.5 billion…