The hardware vendors have an enormous informational and control advantage over their customers: They know what the pre-order queue and delivery pacing will look like, they know and control how much of their own hardware they intend to buy with, they control how much hardware they sell to other people. As such, I do think it's a little disingenuous to say "risk is yours to take". If it was pure uncertainty unknown the the buyer and seller then that would be the case, it's not so simple where the informational/control advantage exists.
While there is some truth to what you are saying, no one knows what the landscape will look like in a few months and that's why I believe the risk is still largely on the buyer's side. The risks the manufacturers face are multiple as well, however
they have been paid for taking said risks. The buyer (miner) is taking a huge risk gambling on a future that's virtually unknown to anyone. Also, while one company can control what they do and they should be held responsible for their actions they can't control what others are doing or predict the future, therefore I will argue that ultimately the risk is yours to take.