Well this is not the first time their sentient weapons go rouge and fail a mission, I am surprised it doesn't happens more often tho
It is so far the main problem their business model has, other than the planned obsolescence of the entire project, which is already expensive and highly susceptible to being replaced with pretty much any other form of warfare, chemical, micro biological, digital, etc
In fact the HA soldiers look like the perfect example of a niche job that would be replaced by cheap mass produced automated drones, and to top it all off they can think for themselves which makes them both less competitive in a weapon market, and harder to openly commercialize
So even with the ideal scenario of perfectly obedient soldiers, cheaper, faster, and greater development, the HA doesn't has much of a future
It reminds me a lot of Resident Evil, and how the virus to create super soldiers eventually just ended becoming a second fiddle subproduct, compared to the more successful biological weapon of viruses that just zombifies people