I wish this dumb naïve argument would just die quietly in a corner.
A the value of a device is not its BOM. It has never been and it will never be.
There are so many other additional costs to factor in. Costs related to the manufacturing plant, its people, its tooling and its processes. Logistics costs related to bringing in parts. QA costs. R&D costs. Software maintenance costs. Marketing costs. Certain parts and software may have royalty fees associated with them. The list goes on, and on, and on.
So please, enough of the dumb "$device is only $2USD because its only a bunch of 2c resistors and capacitors on a PCB".
The thread was about literal parts costs and how knowing those means nothing to the value of a produced item. In which case, a BOM is directly and literally applicable.
No one is saying what you're so annoyed and frustrated about. Literally the entire thread is about how the value of a product is far greater than it's actual parts cost and why knowing that is useless for negotiation.
Learn to listen/read before you get yourself into a tissy about a made up sleight.
For a plane, it's going to be the former
That and the reason it's easy to get a BOM of cheap products is because you can buy them and tear them down. I can't see Airbus managing to buy a boeing and tear the entire thing down without Boeing noticing
Just as we as consumers know we pay extra to the company (even if the numbers aren't oblique), businesses know the same. It's about how much you're willing to spend, not how much they spent to build it.