Wynn Macau casino resort in Macau, China.

Investors wagering on Wynn Resorts' newest Macau property are finding that even as the government supports development in the gambling region, it insists on a policy that could limit gaming-related growth.

Macau, the only place where it is legal to gamble in China, has a policy in place that curbs the supply of new game tables to 3 percent compound annual expansion.