Private equity companies have joined the race to own assets of 7-Eleven's parent company assets.Budrul Chukrut/SOPA Images/LightRocket via Getty ImagesKKR and Bain Capital bid over $5 billion for Seven & i's non-core assets.Seven & i's non-core assets include superstores, baby stores, and Denny's Japan operations.Seven & i also received a $47 billion offer from Alimentation Couche-Tard.Some of the world's biggest private equity companies have joined the race to own pieces of 7-Eleven's parent company.Japanese-owned Seven & i Holdings has a sprawling set of businesses, including 85,000 7-Elevens globally and a host of supermarkets.