1. Communications to earth that are faster than the speed of live
2. The oxygen business colonists will need to breath
3. A non profit to bring about Mars independence from earth
4. The 3D printing business you are going to need to make quite a bit of stuff on site
5. The recycling business Mars will take it to another level
6. Artificial Sun light you will need to top up Vitamin D and avoid SAD
7. The momento business (NFTs) such as designing collectibles that celebrate the colonization of Mars
8. Hydroponic and bacterial agriculture we will need to grow food on mars
9. The mining business as we will need to extract mars plentiful resources
10. Manufacturing robots and robotic systems to build the infrastructure to colonize Mars
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