Sitting in front of the TV and bet sports seem like a no-brainer to me. Also they're able to grow their users effectively although expensively.
They're currently growing their users at a rapid pace even without the gambling element. I can imagine their growth could accelerate more into 2021 or 2022. And since they would be the only streaming platform where you can sit in front of the TV and place bets I can see a more than ok future ahead of them.