If you look at Alibaba's investment portfolio [1], you will see Alibaba has invested in a number of popular US-based startups like Snapchat and Lyft, so are they owning part of Snapchat as much as other VCs (depending on the % of course).

One can say about Google / Facebook / Amazon investing in startups and non-profits inevitably influence these organizations' directions; that's just the nature of any investments. When you donate money to a cause you support, you indirectly influence how the cause is headed, because you can pull the pledge, and when enough people pull the pledge, then the people running the cause/non-profits will have to do something to the demand of the donators.

China is the biggest creditor of the US national debt, and even before that US was careful with its relationship with China anyway. So we can't say there is a cause and effect, the best is a weak correlation, and even that is a stretch.

[1]: https://www.crunchbase.com/organization/alibaba/investments