It's not a matter of if they willingly do it (or even knowingly do it). The only rational position is to assume that any data which is a) desirable for intelligence or competitive reasons, and b) located in (or transits through) China, Russia or any of the western 'Five Eyes' countries is being intercepted. This remains true whether the company agrees or even knows about it.
The only weird thing is that all the companies (including FAANG) don't just come out and say this. Hell, they can even add that they do their best to secure their data and that 'to their knowledge' it's not happening but knowing the capabilities and history of large state actors, it would be naive not to acknowledge their systems may be compromised. The only difference between western based companies and China/Russia based companies is that the western ones may mostly be intercepted for intelligence purposes and less frequently for extra-judicial (warrantless) domestic law enforcement.