The Apple display section at our local Best Buys are always loaded with functioning units that are open for people to explore - not locked down with crappy "BUY GEEK SQUAD SERVICE!" screen savers.
The table with all the tablets at multiple Best Buy stores I've been in to recently are all filled with multiple tablets that are just sitting there with black screens. Not plugged in, not running on batteries, not in demo mode. Just... sitting there.
If Best Buy sold TVs like they sell tablets, they'd have 3 LG units running full color shows in HD with surround sound, and 85 empty screens just hanging on the wall, then they'd be sending all the TVs back to Vizio, Mitsubishi, Sony, etc, complaining that they're not selling.
Additionally, they need their employees to go around and reset the devices to ensure a proper functioning system instead of the ones bogged down by apps/content downloaded by random kids onto the device.
Except of course for the Apple display. All working. All looking good. All the time.
But if that's the case, why does no other company seem to use this approach?
Retailers always demand a fee from the manufacturer before they provide special displays like the Apple section at BB. The contract likely specifies that BB employees will keep Apple's products charged up and functional at all times. This is only possible because Apple's products command high margins that can easily cover the marketing fees.
Apple's tablet competitors obviously don't have that level of relationship. I've yet to see so much as an end cap for an Android tablet.