Would you? Really? Even if the product is genuinely indistinguishable? I would definitely be satisfied if it's indistinguishable, probably even before that.
Well yeah, i bought a "ham and cheese sandwich" so give me ham and cheese. Anything else, I'd consider fraud.
Otherwise the manufacturers can start replacing everything with cheaper alternatives... fllet mignon? Just mechanically/chemically tenderize some cheap cut, it will be indistinguishable, and sell it at a same price. Honey? Just replace it with syrup and aromas, noone will notice. Not enough actual milk in baby formula? Just add melamine, noone will notice.
Would you? Really? Even if the product is genuinely indistinguishable? I would definitely be satisfied if it's indistinguishable, probably even before that.