WebP would never have been adopted and nobody would care about it if it wasn't developed by the owner of the world's largest browser and the world's largest website (which ranks everyone else based in part on what formats and conventions they use), who has the ability to implement it on both sides, and force everyone to care.

WebP is a blatant example of how monopoly power is used to push bad things upon everyone else, and as seen here, for literally no good technical reason.