Buying stocks of Starbucks is better than buying its coffee

Starbucks is a great company of same-stores, though its coffee is not so delicious
Starbucks Corp. said on Wedensday that its same-store sales have risen 6 percent, in September, which tops the estimates of WallStreet.
In the after-hours trading, its shares rose 5 percent, which is about $1.5.
This made me remember that in foreign countries especially in U.S, the law on stock exchange is nearly complete, and is still being improved.
If you buy the stocks of those markets, you are sure to get the profits.
But now in China, who are buying shares and hold and wait for the profits of companies? who dares?
Unmature law is the greatest bar or difficulty for the development of stock exchange market!