Deductions & credits

First, I don't consider it personal-use property as you do.  I may lose the argument with the IRS, but I'm part owner of a business, a full business with liabilities and a 100% risk to my equity.  I've also researched other resources that state my equity is a capital asset.  If I made a profit, I have no doubt the IRS would demand every penny of tax, yet a loss can't be deducted?