Commercials are much more effective when seen on tv as an interruption or as a followup to emotional interest.
For instance, you identify with the show you are watching (that's why you watch it), those feelings carry over through commercial breaks as long as they are not too many commercials in the break.
Watching a commercial on youtube is like watching a tv show or flipping through the channels. You have no investment in it, and actually quite to the contrary you are taking a distant view because of a possible pre-existing involvement with the product. For example:
You like a product a lot. You hear about a new commercial for it, and then look it up. At that moment, you have already sided with the product and are watching the commercial to determine whether or not the commercial is good, rather than the product, which is the opposite of what commercial makers want you to think.
There's a lot of literature on the subject..there's actually a lot more to it than that. That was pretty simplified.
The point is, if you take a critical position on a commercials asthetic/style/w/e, it becomes very difficult for a viewer to get the full impact. They are instead only influenced by comparison to their own sense of stlye/asthetic and judge the product based on that. A company whose talent for commercials is strong must also have good products, and the contrary.
