Yes, there are people who will go that far to win competitively. To the point that they'll practically bankrupt themselves just to have bragging rights. That's what companies involved in whale-hunting aim for, and it's increasingly common now.

64 percent of all F2P games' in-app purchases come from 0.2 percent of their players.

That's a fraction of a percent, guys.

These are people who are prepared to spend 7 thousand dollars a month to stay on top of the leaderboards.