Why you shouldn't bet on the Winner of the Soccer WorldCup 2018!

Most sportsbooks offer bets on who will be the Winner of the WorldCup 2018.
For example the site where I m used to bet on offers odds of 5.00 for Brazil to win the WorldCup. So lets say You bet 5$ on that , you will get 25$ in return if you are correct.

Well that doesn't sound bad ... but there is a way to win even more. Instead of betting on Brazil winning the WorldCup you could start with betting the 5$ on Brazil passing the Group Stage:
The Odds I get offered for that are 1.06 so after that Bet the new Balance is: 5.30$
The 5.3$ You can now take the 5.3$ and Bet on Brazil winning the 1/8 Final
Well the odds depend on who they have to play agains at the 1/8 final but I guess a average of 1.4 seems fine: So after winning this bet , the Balance ist 7.42$
Again you take that 7.42$ and bet on Brazil winning the 1/4 Final the average odds I would set to 1.5 this time, So after winning that bet the new Balance is 11.13$. You guessed correct, we are going to take that 11.13$ and bet on Brazil winning the 1/2 Final. On average I expect the odds to be 1.8 on average now. That will give us a new Balance of 20.03$
Now we place a Bet with 20.03$ and place it on the final. I expect odds of 1.85 on average. So after winning this be our balance is 37.06$

Thats a difference of 12.06$ compared to the 25$ We would have won if we placed a bet directly on Brazil winning the World Cup.

Also we did wager way more money, this gets important if you have a pending Depositbonus or your sportsbook is running a Bonus System.