Originally Posted by
jphripjah
I know of of no other situation where a business denies goods or services on suspicion of fraud but keeps the money anyway.
They're not.
The way it's worded is they are denying you for not having the card available to present at check in, which is subtly different (albeit still fraud related) but makes a huge difference to what you claim. Maybe more similar to you turning up at check-in with no Covid Test result nowadays. You just don't have what is required to fly.
In reality I doubt it happens that much (denied boarding yes, but accommodated by some other means) or we'd hear much more about it.