Corporation Closure

Can anyone explain why some of my state corps just close up shop abruptly despite me doing my best to maintain their cash level around 50 billion.

My idea is to have my country float the brunt of the expense of building up a corps upgrades before passing it off to my CEO once its at/near 200 But its kind of hard to buildup corps just to profitable upgrade levels if they just randomly decide to close on their own without warning. Not to mention damn near impossible to IPO anything other than Mining Corps.

Free state of Vvardenfell on KB If anyone wants to take a look and see if im missing something obvious.

Disregard and delete this please. Saw the other post for this topic and ill assume im having the same problem. Ever so slight dip in hiring level = economists freaking out and shutting down state property.