Reporters have also suggested that China's internet censorship of foreign websites may also be a means of forcing mainland Chinese users to rely on China's own e-commerce industry, thus self-insulating their economy. In 2011, although China-based users of many Google services such as Google+ did not always find the services entirely blocked, they were nonetheless throttled so that users could be expected to become frustrated with the frequent timeouts and switch to the faster, more reliable services of Chinese competitors. According to BBC, local Chinese businesses such as Baidu, Tencent, and Alibaba, some of the world's largest internet enterprises, benefited from the way China has blocked international rivals from the market, assisting domestic companies.