A luncheon for reporters, purportedly about the exhibition, turned into a long advertisement for the company and all its good works. They want to sell a product. Otherwise they're not interested. Corporations like splashy, uncontroversial, high-attendance shows that allow them maximum advertising. As that money disappears, though, it's the profit-making corporations who get to give the stamp of approval.
Art can become just one more tax-deductible way to sell a widget, or a car.
But big corporations do want something in return.