It's been an M&A company for years now. Just look at its portfolio of ownerships in competing local leaders like Didi, Yandex and Grab. It's a perfect food delivery ride hailing super app investment fund!
How is that different? You could just rephrase what you said to say:
Uber purchased non-trivial shareholder positions in their global competitors.
For example the case in Russia was a quite literally a merger. Uber and Yandex made a joint venture, which operates in Russia and some former eastern bloc countries.