Misconception About How Wonka Made His Choice.
Most people think that when the 4 kids didn't heed Wonka's warnings and had their misfortunes, they were eliminated from the contest to win the lifetime supply of chocolate. Many people also argue that Charlie should have been eliminated for stealing the fizzy lifting drinks. However, that was the not the case. None of the kids were ever eliminated. Had the other kids been able to rejoin the group the way the Charlie did, they would have. The contest was 100% at Wonka's discretion. Even at the end when it was only Charlie left, he still could have just said "You know, Verucia, might be ok once she starts to understand that she can't get everything she wants. I'm picking her to give the factory too."
None of the kids were ever eliminated, and any of them still could have won, up until Charlie gave back the Everlasting Gobstopper. That was the only thing Wonka really cared about. Who could he trust? He didn't really care that Charlie drank lifting drinks, or that Verurca feel down a garbage shoot, he just wanted to know if they would sell his secrets.