I know it's culinary heresy, but unless you're eating it raw (like spread on a piece of baguette) it doesn't matter much what kind of fat you cook with in most preparations. If you were to take 99% lean ground beef right now and soak it with a few spoons of olive oil or canola, it would probably be pretty rich and moist.
The kind of fat does matter for cooking and flavor. Different smoke points, water contents, caramels, etc. Much as crisco was developed in the early 20th c as a vegetable-based substitute for lard, someone could develop something crisco-like but specifically formulated to be marbled together with vat meat, and to sizzle within roughly the same parameters as steak fat.
