Honest question, is Tencent a holding company or a technology company?
Google decided to brand the holding differently, which probably makes good marketing sense.
They are the low cost leader in mobile telephony, have a vast solar operation (heavy govt subsidies), and have a powerful contract software Salesforce.
But to your point, the biggest single share holder of Tencent is Naspers -- a South African company -- which at it's hight owned 45% of the company but currently owns about 35%. Their orignal investment of US$18M is now worth over US$115B. Foreign companies have a long long history of taking major stakes in Chinese tech companies. Softbank and Yahoo both had major stakes in Alibaba. The large American VCs tend to be fairly active in China.
Also anyone can go buy shares in Tencent themselves. They are a major part of my portfolio. And if you don't want to buy them directly then KWEB is a great ETF that focuses on the China tech industry. BAT (Baidu, Alibaba, Tencent) makes up the majority of KWEB.
Edit: Maybe you meant Alphabet specifically. Yes, that could be more difficult because of Google's long history of operating more as an extension of the US State Department than a private company.