This is not true at all. Virtually all of Chinese international business (and indeed quite a lot of its internal business) is conducted in English. The assumption that the Chinese language will grow in importance as China becomes more powerful is baseless and completely wrong. English is far too well established in China, so much so that many Chinese people do not speak their native language at work - not even to each other.
By all means learn Chinese if you're interested it, I'm sure it can be very useful - but it's certainly no more useful than any other global language. OP: if you want to work in the tech industry, French and especially German would serve you better than Spanish or Chinese.