And you are doing 40k kms oil change interval?
All sorts of products exist in market as long as customers line up for them on hype.
E.g. Ive seen people buy amsoil atf for heavy use and pay 5 times the cost and amsoil still said to drain it at manufacturer interval, so why not just buy the cheaper original fill atf and save a lot of money.
Ive seen some people line up to buy some ultra weird oil for their hydraulic system while the manufacturer oil is several magnitudes cheaper and works great.
I can understand finding a unique lube for an application like a forklift being used in a freezer or a mining spec 1/2 ton truck requiring a non flammable oil in hydraulics etc. (its not sold by boutique blenders anyway)
Similarly Ive yet to see a farmer buy amsoil grease, however I see them buy citgo/mystik, chevron, mobil, john deere, cat etc, and these guys buy these greases in massive quantity too.