Because a sale for cash is a basic legal contract that predates modern society by millenia, whereas a LBO that PE uses to purchase companies is a weak spot in American Capitalism created at the intersection of:

1.Shareholder primacy. Under Delaware corporate law (which governs most large U.S. public companies), once a board decides to sell, directors have a fiduciary duty to maximize the price shareholders receive. A premium cash offer from a PE firm is hard to refuse without legal exposure.

2.Interest deductibility. The tax code lets companies deduct interest payments but not dividends, which makes debt-heavy capital structures more tax-efficient. LBOs exploit a feature of tax law that exists for many reasons unrelated to private equity.

3.Freedom of contract and limited liability. Sponsors can put a thin equity check into a holding company, have that company borrow on the target's assets, and walk away if it fails, because limited liability is the foundation of corporate law generally.