actually 5 million is very very low compared to their lottery and also considering the prize!!!
the current number of tickets to win the Lambo which is worth $200k (~24BTC) is 5.2 million. then which had the highest prize for last round at 0.3BTC had 245 million tickets!
that is a gigantic difference, you can get a much higher chance of winning a much bigger prize in their Golden ticket section.
Cannot compare Lambo tickets with weekly lottery tickets.
1. You can buy weekly lottery tickets at 1 Satoshi. But 1 Lambo ticket costs you 25,000 Satoshis.
2. You can get 1 weekly lottery ticket for every 500 Satoshis you wager. But for receiving 1 Lambo ticket you need to wager 500K satoshis.
3. You can get 2 free lottery tickets for every free roll you play
4. You can get free lottery tickets for the games your referrals play.
Generally, total Lambo tickets are fewer. But the tickets that everyone has are also fewer.
The total number of tickets does not matter. The important thing is the ratio of number of your tickets to the total number of tickets