Welcome Metalottery.win , looking for long active engaging in this forum for your own benefits as Lottery is something in gambling that has lowest chance to win but biggest prize to take(if lucky.)
To rely solely on the lottery I'm not sure they can survive here and in a gambling industry that is getting tighter and tighter every day.
Maybe in the future they should add several more types of bets so that more gamblers are interested in registering and using their places even though they do have names that are intended for lottery bets.
We can also understand that there are not too many lottery gamblers and only big jackpot hunters who are always loyal to lottery bets.
The lottery is a bet that is so difficult to win, even the winning percentage of the lottery is very small, only 30% of gamblers have a winning percentage on lottery bets.
Though the lottery is also a type of gambling since it also totally depends on your luck if you will win a prize in it or not, still, you are right that if they are competing against gambling platforms, they will need a little more than just a lottery, and I'm sure they will think of doing something about that if they have such intentions.
Besides, I think it will also require them to have a pretty high budget if they try to become a full-fledged casino platform and they probably don't have that kind of money being relatively new in the industry.