There is no analogy. It's comparing returning costs per product (you need a new tomato per 5 burgers) to a one time costs that can be cut during development. And additional copies of a game don't generate more costs.

There really isn't.

The op comment was that gamers need to buy expensive hardware so that developers could cut on features/optimization.

The follow-up reply likened it to customizing your burger, but the better analogy (and the one I assumed) would be for McDonald's to remove all tomato and pickles (saving money), and the user had to buy it themselves to add to the burger.