I wouldn't leave tech. At the most, I would give it a try in my free time first. I think on potential problem is that your brother may be able to do some thing

I wouldn't leave tech. At the most, I would give it a try in my free time first. I think on potential problem is that your brother may be able to do some things that are in a legal gray area. This happens a lot in many countries, but you don't want your name on the company if something goes sideways. To be blunt, if your home country is China, India, or any developing country where favors at the border are a thing, there is absolutely no way I would do this as stated.