But viewed that way, Just Dice gives you the chance at playing lottery style bets without the lottery commission taking half your money. Max payout is 990,000x in JD. If you want to buy 1000 million dollar lottery tickets for $1, then the overhead is about $500 at the lottery. On JD the overhead is $10, and all of it goes at the jackpot instead of wasting away on mini payouts.
The only problem with that is that the "jackpot" (ie. maximum win) at Just-Dice is only 0.5% of the bankroll. Currently the bankroll is around 50k BTC, and so the most you can win per roll is 250 BTC. At a little under $600 per coin that is worth a little less than $150,000 which doesn't go far when shared by a large group of workers pooling their stakes.