They're not just videos "about repairing". He's teaching people about defects, finding them, and how to repair them. He's selling tools used for repairs, even t

They're not just videos "about repairing". He's teaching people about defects, finding them, and how to repair them. He's selling tools used for repairs, even though someone can start a competing business. It's like you're being sceptical of teachers because they're getting paid.