I'm not so sure. By now we have seen that Apple has some of the best market analysts working for them. Look at the iPad mini. Everyone said it was us$ 100 too high in price. I tried to buy one this weekend and it was sold out everywhere including the Apple Store itself. 
If Apple introduces a TV set, we can be sure that it will be sold and that it will be priced on a premium level that still commands enough demand and margin.
		
		
	 
A better way of saying this is:  Apple's entry into a market will have enough 'value' to drive sales at the price point.    And Apple has been driving technical integration that just works in an non-technical convenient manner.
The key item here is... convenience.  My wife and I just got a new 47" TV, as she broke the cable connector (.05 piece) on our 5 year old 37".  We still have the 3 remote problem, and is always on the edge of throwing one of the remotes at me or the TV (last night it was sound).
An Apple Built TV would be ideally a 1 (7 buttons: power, menu, up/down left/right, and select) remote solution (switched power to the sound system, ability to control sound with the single remote), but at the worst 2 (one for the sound system volume and sound processing).
1 remote, one menu for content/channels/DVR(yes, there still has to be DVR for people like me who like local newsprogramming (TcPT Almanac!!!!).  
As bad as we hate iTunes now... it made owning an iPod easy.   buy or burn, you plug in your iPod into your Mac and you had music synced on your device.  Playlists just happened.  No crazy symlinks, Unix directory structures, scripting to get your MP3 player to play a list of songs in the order you liked.
Whatever interface that is on the Apple TV device, it has to be that easy, or it will not capture the market, and it needs 20% market share to hit critical mass.