Sam,

“제가 알기로는 F1으로는 수입을 못 올리는데”

No, Simply that’s not true.
The fact is you can’t get paid for unauthorized work you do.
You can still work on campus and get paid and you can use CPT to get paid when you do internship.
Also you can buy stocks or wahtever and get your dividents.
Follow my draft?

So you invest your money in to the business and you can get paid as dividents. Which means you CANNOT work for your company on the PAPER.

For more info search on the web or ask Lawyer.
Good luck.