What is this all about? An Appropriate product names?

Various products have names that fit.

Cow gum is not made from parts of cows, but by Mr Cow.
Hoseasons holidays sounds like a relevant name but is just the name of it's founder, Mr Hoseasons.
Mars bars, unlike galaxy, are nothing to do with space, but named after the owner, Forrest Mars.
M & Ms stand for- Mars & Murries,the two original partners.
And the oldest confusion of all, Thomas Crapper made toilets, but the actual word was already hundreds of years old by the 19th century when he was- literally- 'in business'.

What is this all about?