Isn't that what you want, you're probably still then making a profit from them?
That's what I was thinking when wetsuit told me they started doing it. But the thing is we make a small loss on the lottery so it is +EV to them because of buying tickets with all the free-roll winnings.
Restrictions on that are going to be really difficult to do as it'll block out a lot of regular users already.
We'll probably just have to make it -EV.