Yep. I still have my issues with Tencent, although if it's true they're trying to distance themselves from the CCP then that is a good thing IMO and would alleviate a lot of concerns. However, companies like that don't have their own gaming platforms or subscription services to push, so the companies they invest into (or outright buy) won't be used as leverage against other platform holders or subscription service providers...not anything initiated through companies like Tencent themselves.
Now if an actual other platform holder or subscription service provider happens to work out deals with the companies they have investments in or own to get things like an exclusive, that's something besides the point. That's still an actual platform holder working out a deal with a 3P publisher that just happens to be owned by another company or investment group.
True, a Tencent, Embracer Group etc. could always decide they want to make their own console or service in the future, or throw their weight behind a new entry (like how EA did with the 3DO back in the day), or just back one of the platform holders exclusively. But the chances of any of those happening are very low. For one they could only really do that with companies they actually own. Also, unless they got the support of employees at the companies they own, they would risk a mutiny, or a bleed out of talent at a mass scale, significantly weakening them.
I hope that if there are people who don't quite get that yet, they will in the future.
They could be doing that, we genuinely don't know. Keep in mind this acquisition stuff's a pretty complicated game of chess; you could speak one thing to draw attention to that while actually doing something totally different behind the scenes.
I also think the answers Hulst gave don't prevent Sony from making further acquisitions; they may just have a preference for a different approach. An increasingly idealistic one if not necessarily one that can be done in practice exclusively, but a preferred one in any case. And one that I generally would prefer as well, if there was no major threats to big chunks of the 3P market being consolidated through acquisitions.