"Bought out" comes to mind as having a very different connotation than "merged", even though they can often refer to the exact same events.
"Kicked out of China"
Fail to compete with Didi in China
So in future can Didi give challenge to Uber in other markets? or Due to this deal, Didi cannot come to US or other non-China markets and directly compete with Uber?
I don't think so. IMHO, it is even harder for Chinese company to come out than US internet company to go to China. The difficulty felt is mutual.