Most businesses fail. Most acquisitions get shitcanned, because statistically most of them are acquisitions of failing businesses. Then there’s the possibility they bought that company and killed it to stomp out completion and suppress the IP. Or it could have been because they needed to get funds moved, and that company was used to empty the bank, so they could ask VCs for another round, with the added bonus of that purchase raising the valuation. I’m sure there are a million other reasons but I know that every company eventually starts to gobble up other companies so it’s some “tie it up”, “use up the surplus”, or “dodge taxes” reason