The problem is, there are thousands of those lottery participants 50-500 tickets and only one of them wins the lottery, in every 10 rounds maybe. On the other hand, those guys with ~40k tickets win every 3-5 rounds. Sometimes they win every round. So at this point, it is probably pointless to think about winning the lottery unless you are one of those guys with thousands of tickets.
You are saying that around 40k tickets will get the winning after 3-5 rounds. But I just make a test out there to buy 100k tickets on each week and it does not even double up my chance to win here. Instead of winning, I do not get any prize at all. So what are you saying here? It is actually does not have the same calculations as your did but still luck is a big factor here to win on their lottery game. Either you buying most of the tickets or may be you are being really lucky to have win the prize there
You are right. Every week there are at least 200 million tickets. If you have 40,000 tickets, your chance would be (40,000/200,000,000)*10=0.002=0.2%
It's a small chance and the probability of winning a prize every 3-5 rounds is really low.