For sure when the rewards come it's worth but taking $75 risk is high for small gamblers who bet with minimum bets of $1 or even below so you can see taking risk is essential for such big rewards but personally I can't afford such single bets as my budget is limited but still that player is lucky on such win.
Same here, I am just a small timer, and that $75 is my whole week bankroll fund, I wouldn't bet that amount on a slot in one go else there goes my entertainment.
I would guess that it is not really an idea for just one time marketing, but at least "some" marketing. We haven't seen them doing marketing for millions and it looks like maybe they won't do that at all. This is why I believe that they got the money and did absolutely nothing with it.
What sort of marketing / promotions are you guys really expecting? I mean if you guys do want to see something then simply ask for it. Rollbit's staff are pretty much open to what the community wants though. They are not active in this forum so hit up the discord channel and write all the stuff that you want as part of the suggestion if you truly want that
I would have put the majority of the fund to the house bankroll to ensure players that there is enough fund to pay big wins. This way, big player will come and play without worries. Part of it to the improvement and development of the website and Casino services. A very beautiful and presentable site couple with good promotions and great services attracts more players.