Many businesses go under about 2/3, on the 10th year. So failure rate is high.
Bur high yield means high risk
Businesses that have low failure rate;
1. Laundromat. All you have to do is clean the site, maintain the machine and collect the coin payments
2. Rental properties
3. Self storage facilities Not operating processes needed
4. Transportation business: delivering goods and people from one point to another
5. Vending machine
6. Agriculture business
7. Dumping truck business