How did mr krabs and plankton go from bff to enemies?

Mr. Krabs and Plankton were once best friends who shared a passion for cooking and entrepreneurship. Their friendship soured when they opened rival restaurants, leading to a fierce competition for customers in Bikini Bottom. Plankton's relentless attempts to steal the Krabby Patty formula and Mr. Krabs' aggressive defense of his business ultimately turned them into bitter enemies. Their rivalry is a central theme in "SpongeBob SquarePants," showcasing the extremes they go to in their ongoing feud.