Lol, going from powder cocaine to crack or heroin is highly unlikely for someone who has discipline, ambition and work ethic, especially if that someone is extremely wealthy and can afford the much more expensive powder cocaine.
People tend to switch to crack when they are at rock bottom and only care about getting high since it is much cheaper (which they quickly realize is a fallacy since unlike the powder version it is highly addictive and requires more frequent use ultimately making it exponentially more expensive) hence crack heads being unproductive criminals doing what ever they can to get from hit to hit while some of the most successful people in the world routinely use powder cocaine.