I don’t think we could compare ourselves and gaming habits with Drake. First of all, he has enormous financial resources, so such amount which can be considered to be a spending balance of a addict for us is not really a determining factor for him to be considered one. But then again, if he really has gambling addiction, I don’t think that we also have a say about him being affiliated with stake or any other casino. At the end of the day, it is our decision if we’ll let ourselves be influenced by his actions or take the higher road.
As the saying goes, "gamble what you can afford to lose", of course we don't have millions so we cannot afford to gamble that amount. Drake is a millionaire, he can gamble at that range because he can easily make that money, but hopefully he is not a compulsive gambler as one can easily get bankrupt if they cannot control their gambling habit.
Obviously, such acts like betting $1.3 million dollar in one event is only possible to millionaires like Drake who continually earns large sums even if he act lazy for a month and that bet alone was indeed a huge amount for someone who can't afford but for people like Drake maybe they can earn that amount in a few weeks even if they lost that bet.
Actually, I searched for Drake's assets and found out that aside from being a hip-hop artists, he is also owns a record label (studio), a clothing line and a portfolio of real estates which explains the fact the he is in the 3rd list of Forbes highest paid hip-hop artists.
Link:
https://www.businessinsider.com/photos-drake-net-worth-real-estate-music-business-2019-9