But I'm thinking that there are a lot of gamblers that are into competitions, but they seems can't get a good multiplier to enter. Or just waiting for the perfect time to put their bet if they see that they have a better winning multiplier than others.

That's why even if you think that you are going to win with 1000x, then suddenly in the last day, someone will come up with a huge win and overtake you and then the 5th placer that is hoping to enter and win some, are kick off the top 5. Just like in a 100 meter dash, lots of good time, but in the end it's just about the fastest 3, if I put that as a analogy.