Last Post Wins Round 4

[lolliftw]

If you have to pay upfront fewer people would play the game, and therefore lesser profits.

If it is free to play upfront, but gives lots of "in-game purchases" such as boost, premium, etc, then effectively they would pay for these purchases because they like the game and want to be better at it or continue playing it, or for some other reason.

It's just simple psychology at work to ensure these companies earn profits.