system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] What does Stark industries do if it doesn't make weapons??

After Tony stopped manufacturing weapons how does his company maintain cash flow?? What does it manufacture now?? 

And how is Stark so rich???  

He blows up billion dollar suits to make his Girlfriend happy....  He starts an Expo that funds all the applicant's   research and not to mention Stark Relief Fund.. where STARK pays for all the damages done by the Avengers Initiative. 

How does he afford all of these??  There's no way he can get all that money from 1 international company.
gpt
Clean energy. 

Also, phones, computers, hovercraft and aircraft engines, biotech subsidiaries, micromotors (the suit uses TONS of these), efficient power transmission tech, metallurgy for combat and non-combat applications (construction, spacecraft, etc.). 

Stark Enterprises isn't just weapons. Weapons were just the area Tony had his hand in the most, because it brought in the most return on investment in terms of research money. He then farmed out all the tech from the military applications into civilian applications.