Why don't they still hardwire? They know we are going to throw away the power cords that come with their products, and add ours, so why would they jack up their cost.
A few manufactures do sell cords with their products. Shindo and Merrill Audio come to mind.
If you study the pricing of certain cords you can buy the best cords to see what they have to offer and resell at a gain. The best I have heard were Elrod, Ch Acoustic, and High Fidelity. l think Lak has heard these cords and likes the ones he recommended better. Very good recommendation.
Hope the OP lets us know what he thinks, even if he can't hear anything different. The lucky ones don't.