"Customer involved every day" doesn't necessarily mean that you let the architecture or product be designed strictly for the customers need. Point is to have as

"Customer involved every day" doesn't necessarily mean that you let the architecture or product be designed strictly for the customers need. Point is to have as much user feedback as possible, to take into consideration (or purposefully say "we're not considering that"). To end up with a useful product in the end, it's better to err on the side of involving the user too much, than too little.