They do it because it's cheap and easy to mass-produce. It's the same reason for why they're so fickle when it comes to feature adjustments. If you get too technical, wage expenses go up. Do your shoulders hunch forward?
I'm not sure about your distinction between "casual" and "dress" shirts, but you're going to be working with upper management. If you aren't sure about the dresscode, then wear the less casual shirt. After a few days, you'll know what to expect, and you can adapt.
I hear you. In this world of immediate gratification, for most people, patience isn't a strong point. Some people just like the big-timer feeling that they get from shopping in well-known retail store.
Of course you disagree, because you want to continue this senseless argument with your faux-logic. The options that I listed (move on or buy and judge for yourself) still stand. Beyond that, you're just engaging in typical internet twattery, and it's not accomplishing a thing. I'd like to see more fit pictures too, but they have to be taken by the purchasers, not the seller. If customers don't send pictures, then he can't post them. If more of us bought suits and...