For consumers yes people are locked into google or apple ecosystems, but for large scale businesses often they either have their own infrastructure or they do multicloud. Sometimes they even use different vendor mixes per region because there may be local providers who can compete locally with the big boys. What I think would stop large businesses from using Chinese vendors is the US government saying they are not allowed to use Chinese vendors. Their lawyers at that point will simply not allow them to buy Huawei equipment or use Tencent cloud. I dont think these shell games are strictly necessary when it comes to companies doing business in the US. Politically though it may be problematic for them to do that right now.