As time has gone on I have come to think that this might be the solution. Breeds have very different traits, and need different styles of ownership. Some breeds need more capable and experienced owners than do others. The breed I own is very prey-driven and needs both physical exercise and mental stimulation to be really happy. If anybody ever admires them and asks what they're like to own, I say that they are delightful, but very full-on and need a lot of ongoing input to get them where I have got mine and to keep them there.
Some big canine organisations seem to be keen to obscure the fact that all breed are NOT the same. Dogs Trust's rehoming website currently has about a dozen cane corsos or crosses - but no mention is made in the jolly write-ups of 'lovable', 'affectionate', 'shy' and 'squishy' dogs who are 'gentle giants' of what the breed was bred to do.
If you follow the link Dogs Trust provides to find out more about the breed, there are anodyne statements such as, 'Just like you, every dog is an individual with their own unique personality and prior experiences. So, every Cane Corso temperament is different....Each dog’s personality is shaped by their experiences of the world...' They say the same thing for every breed: there is NO mention made of breed traits, of what the dogs were originally bred for, of what you might expect. In fact, on the basis that they're all 'active' they lost half a dozen other breeds: labs (gun dogs, bred to retrieve), Irish setters (bred to search for and point game on open ground), Weimaraners (developed to hunt wide, point game and retrieve it, huskies (used to pull sleds), Belgian Malinois (developed as a shepherd dog in the guardian sense, and bred for the last 50 years at least for protection work), and Dobermanns (which are at least a guarding breed).
IMHO, all of this is both disingenuous and dishonest. Yes, the ingrained breed traits will be flattened out by the show ring, but pet-bred labradors still retrieve, pet-bred dachshunds still bark and pet-bred corgis still snap at heels. I wouldn't expect a modern show-line poodle to work (very few modern poodles do), but it will not be the same as a collie or a border terrier. Genetics are genetics, and they influence behaviour as well as looks.
Drives me nuts. It lulls people into a false sense of security, and they end up with a dog that they are just not equipped to handle.