Because there is generally no intent to deceive. Processed foods are developed to optimize their quality, longevity, and price. Not the order of ingredients on the label.

Nutrition facts are printed in black and white at a readable size when there is room for the full panel, this is by law. It's not up to food manufacturers.

And I don't know what you mean by "around here". Traditional jam has equal amounts of fruit and sugar. Like the kind your great-grandmother made. Of course it is essentially eating flavored sugar. That's literally what jam is and why you spread it thin rather than eating whole spoonfuls of it.