I'm going to focus on one self-employment business rather than two self-employment businesses. Having multiple jobs might be simple for some people: even my mom has two jobs. but a self-employment is a lot more than a job. self-employment requires research into industry, population, supply, demand, competition, and my neighborhood. self-employment also requires promotion and advertisement. So it might be easier for someone to have multiple jobs, but it might not be easy for someone to have multiple self-employment businesses.