1) Many startups fail due to premature scaling by hiring too many employees and spending too much on marketing before proving their business model. This leads to a high cash burn rate and difficulties changing course. 2) Successful online companies are lean with a small team in the beginning and focus on being profitable from an early stage rather than rapid growth. 3) Examples of successful Indonesian startups include Detik.com which pivoted its business model and is now profitable with 200 employees, and Dinar which is profitable with only 4 employees despite daily transactions of over $1 million.