There are two ways for your subsidiary to close down - either it doesn't have enough cash for development, or there are no profits from the product.

Let's say your subsidiary is scheduled to release an OS after 3 years. If development costs $100K every month, the company should have $3.6M in cash plus costs for printing (36x$100K). Otherwise, it will simply go bankrupt. You can prevent this by depositing your own cash into the subsidiary's balance(from subsidiary's details window). To check how much money your subsidiary uses, compare its worth between two months.

Now in terms of determining whether it's worth to deposit the money into the subsidiary's account, check what and when it's going to release. If there are no other identical products on "Upcoming releases" window in +/- 1 month period, usually it's worth it. Rarely, AI companies (including your subsidiary) will make blunders like developing the software for a dead OS, just because it has more features and a lower licence cost.

Thanks for the answer. And how do you get the money from them ? It's automatic or do I have to withdraw from subsidiary menu ?

Originally posted by flaviotobi:

Thanks for the answer. And how do you get the money from them ? It's automatic or do I have to withdraw from subsidiary menu ?

Yes, withdraw the money and you will get it in the form of cash. Leave some money if you want the subsidiary to keep developing products.