Regarding the optimal capital structure of a corporation:

		Even a low debt-to-equity ratio is bad for the company regardless of its specialization (capital incentive company or services company or technology company)
		A high debt-to-equity ratio indicates a higher WACC for the company
		A high debt-to-equity ratio leads to increased required rate of returns by investors because the company is receiving more financing by lending money subjecting to risk, and its stocks have a higher risk
		A high debt-to-equity ratio indicates that a company is borrowing less capital from the market to fund its operations