After the rocket launches another option could be to build a spaceport that could be fed any resource or goods for off-planet export. However to make expanding your factory a requirement you could only win export contracts if you can sustain a high level of production per minute over a set amount of time. Failure to win the contracts could result in massively increased alien attacks or maybe off-world raiders landing in dropships that try to steal your goods.
The contracts could randomly ask for harder and more difficult to produce goods each time so that eventually you'ld be overwhelmed. You couldn't ever really win after that, but you'ld get to see how many days it takes you to lose
