That is an incredibly optimistic belief you have about the purpose of corporations. In reality, corporations only have the responsibility to benefit their shareholders.
Making sure your customers are happy and keep giving you business is certainly one route. And I think most companies at least start out this way.
Though it’s funny you use Apple as an example, since they’ve been widely criticized in recent years due to the parasitic App Store practices enabled by their stranglehold over the smartphone industry.
Government does get corrupted by money, but that money ultimately comes from rich corporations. Eliminating government involvement could just make corporations abuse their power in other ways.