Here's the thing.
As a consumer, I don't love their prices. Maybe if I was a stockholder, I might. But, I am not a stockholder.
Within whatever legal limitations there are, they can charge whatever they want. That's the nature of capitalism.
But, you are perfectly free to purchase or not purchase their offerings. That's also the nature of capitalism. If you don't like their prices or what you believe are too high profit levels, don't buy Apple products. Just as with any other product out there. (OK - it gets messy with basics like health care, food, and shelter. But, Apple doesn't sell any of those. At least as far as I know.)
For me, I like that they are offering the option to extend the useful life of products you might purchase from them. Some people don't care, since they will buy a new whatever in two years or whenever. So, they'd rather not have to pay for a better warranty or AppleCare+. Even if Apple were to cut their profit margins, that basic principle would still hold. Others, like me, are happier to keep a product longer as long as it works well. By that, I mean reliably and without malware. This option makes me more likely to consider a new Mac because it will last longer in my application.