In an ideal world everyone would share their architecture, stack and so on and we as an industry we could learn between each other and everyone would have a net gain out of this information sharing.
In reality at the time that you share something in good faith you will always have someone trying to exploit it.
One example: I’ve worked in a CV production API to recognise certain documents. More than 900 days with no spikes and only real users in the system.
Then the CTO went to a conference to talk about how our performance was great and made a very large advertisement about our system. End result? 1800% spike, and tons of frauds and adversarial stuff coming.
Not being cynical, but I do not think that we’re entitled to have any disclosure from any private company in that regard.