Alibaba Group Holding Ltd (NYSE:BABA) co-founder Joe Tsai expressed optimism about the company’s future despite recent setbacks. What Happened: Tsai acknowledged the challenges Alibaba has faced in recent times. These include internal changes, the cancellation of a cloud computing IPO, and increasing competition in the e-commerce sector, according to an interview with CNBC. “Now with the restructuring and with the new management in place, we feel a lot more confident in placing as one of the top e-commerce players in China,” Tsai said. “Where we didn’t feel as confident as before, we felt the …