Yeah in my book Normalization just raised the volume of the selected audio so that the maximum is at the true maximum (like, uses all the bits so to speak). What commercials do is compress the heck out of everything then make sure that the result is normalized. So basically, everything is loud. This is akin to the “loudness wars” in music.
Ironically, the compression that’s used to make commercials louder is also the primary algorithm in hearing aids to help us hear better: reduced dynamic range, and in general the boosting of volume … so in a sense we are living our whole lives in a commercial.
That should get us some sympathy haha.