Leonlc, err, you started with the "You are getting confused by words" and etc. Let's agree to not insult each other.
Anyway, of course you can cut corners in every industry, but it's easier to do so in games. Because the end user does not know what the game suppose to contain until he plays it to completion.
If Apple is making a new phone, every little feature of the phone is inspected by the consumer before it's bought. Some features are also vital for a phone or vital to upgrade from previous phones. You can't sell an iPhone 2 inside an iPhone 5 box(although some people bought bricks inside Apple boxes).
With a game, you can cut as many corners as you like, your 50 levels game can be shortened to 10 levels game. The user will not complain because he didn't know the game was originally meant to have 50 levels.
Things like splitting games into episodes are common in the game industry and with indies as well.
A game is one of the few products that the user don't know what he is buying until he plays it.
Of course there are reviews and etc, but you usually can't really tell what is that you are buying until you actually start playing it.
Maybe that is one of the reasons users like to buy sequels from AAA companies, because then they buy something they are familiar with.
About the work that people do in the industry. I believe they try to be efficient as much as possible. They probably use "tricks" to shorten their production time.
For instance the characters in Assassin creed that have details up to the finger prints and the folds in the skin.
They take finger prints pictures from real photos and use that for displacement maps. They don't actually draw the finger prints.
And graphics do sell games. So does IP and many other things not directly related to gameplay and how fun the game will be.
But... that applies to indies as well.
Indie games sell thanks to networking, gimmicks, visuals(pretty visuals don't mean they have to be next gen 3D) and all the other tricks the industry use to sell games as well.