Yes, you need free time, and either having English skills, learning English skills, or knowing another language that has good documentation is important. But i

Yes, you need free time, and either having English skills, learning English skills, or knowing another language that has good documentation is important. But it's still a far shot from needing a tens of millions of dollars to build a factory, or even tens of thousands to buy some basic equipment for some smaller business that doesn't have the potential to get anywhere nearly as big.