A person is not a company and a company is not a person. People generally do not change much, but companies change as the people who run it change. 30 years ago the Kodak corporation was a Dow Jones company making photography products, today it’s a penny stock that is constantly trying to hop on the next big thing (blockchain in 2019, health care in 2020 etc.). The best way to tell if a company is going to succeed is to research its current plan and staff, as well as its competitors so that you can tell it will succeed. Easy to say, hard to do.