In the field of game design, the point of cosmetics should be at most endgame content. Not the entire game itself.
Sea of Thieves is entirely built on selling cosmetics with real and in-game money, and nothing else.

In the field of game design, the point of cosmetics should be at most endgame content. Not the entire game itself. Sea of Thieves is entirely built on selling cosmetics with real and in-game money, and nothing else.