I think the strategy may be more benign. ZX is a venture capital fund. They need to invest and make a return to impress the InBev bosses.
In the NB case, this could be as simple as an investment that the fund manager thinks will make a good return overtime. One possible strategy could be to combine NB with other businesses (more HBS or distribution businesses maybe) to make a larger venture worth more together than in pieces. My guess is such a conglomerate would be of no real interest to InBev except as an investment they can sell for a nice return.
This could be more of a sign that the HBS market is now large enough for institutional investors to want a stake.
This seems like it's probably what's happening. I'm guessing the existing fund wanted to sell and ZX was there with the cash to buy them out.