I don't think it needs to be 500k just to get more hyped, there is a leeway of betting smaller and getting quicker results which is why I think people would not wait until 125k eos and bet smaller and tiny amounts and try their best before that number. Jackpots are such a small chance that normally you would expect it to never hit, people say things like if the odds are 1 in 2.5 million that I will play 2.5 million times and eventually win, but thats not the case, your first bet has the same chance of hitting jackpot as your last bet which is why it is super impossible to hit jackpot normally.
However sometimes luck would have it someone wins jackpot and 10 days later another person wins a much lower jackpot, you never know when you will hit it, maybe someone will hit jackpot in an hour, maybe it will be another year, its that kind of odds.
Yes there is same chance with first bet and millionth bet to get jackpot.
But the odds is 1/2.500.000. That means in the long term, average bet per winning jackpot would be around 2.500.000. The 100th bet can take the jackpot but 5.000.000th bet can also. Still, the average would be around that 2.500.000