Yep, it’s definitely clever marketing. But then we live in a world where people are happy to pay over the odds for things which have only an intangible set of benefits compared to the cheaper version.
If the amateur product is easier to handle for the novice and smells nicer, and the buyer is happy to pay the premium, then everybody’s happy - especially Meguiars, who make much higher margins. I think one additional factor is ease of access, you can buy stuff like Meguiars or Autoglym in any high street.