I would say you are right, but these argument are more appropriate for marginal discussions.
There is quite a bit of transparency with respect to pricing in the RAM market; thus charging 10 times more, as some here have asserted, does need some justification by Apple. Customer sentiment would turn very negative if they would say: it’s because we can get away with it.
My guess, from a business perspective, is that they’re giving themselves some gas in the tank, so to speak, in case a competitor does emerge, and only then would they hit the pedal to the metal, so to speak. That’s my guess anyway.
I don't disagree with the points made, but I do think they deserve more nuance.
The way I see it, Apple is a little different from the rest of the competition in that they are able to integrate their hardware, processors, software and services together. The implication is that macOS is presumably optimised to run better on the M1 (and later) chips. In a sense, macOS runs as smoothly on a laptop with 8gb ram compared to a windows laptop with 16gb ram, and Apple uses this optimisation to improve their hardware margins by cutting down on specs instead of passing on the cost savings to the consumer, because they know that at the end of the day, it's the experience that matters to the end user, not so much raw paper specs.
Or maybe the cost savings has manifested itself in the form of the entry level laptops with 8gb ram, if we choose to see the 16gb ram / 512gb storage options as the "true" Macbook offering. I suppose this argument is a little specious, but perhaps that's another way of viewing things? Ignore the base model, and consider only the cost of the upgraded model that you do want, and don't think too much about what it could have cost if you chose to skimp on ram and storage.
A lot of business decisions are made from a profit-maximising point of view. I get it doesn't always make for politically-correct answers, but then again, you don't run a successful business by giving customers everything they want. That's a surefire recipe for disaster, because users are always going to want more for less (money), and I think Apple has so far managed to avoid the commoditisation trap of the rest of the industry by having its own unique OS, software and services, which in turn allows Apple to differentiate itself from everyone else.
So yeah, to put it bluntly, it's probably because Apple (and maybe only Apple) can get away with it, but as I said at the start, the point deserves more nuance.