Because they already make a $&#$% of money and adding that stuff wouldn't benefit themselves?
Well not exactly, oil companies do add some additives to the oil and you should still replace your oil every 10,000 kms anyway so they arent missing out on sales, but it would cost them more to add a superior additive.
The majority of motorists wouldnt really care if it had a superior additive or not, most people sell their cars or ditch them before the kms get to high and its accepted or believed by many that at 200,000kms (or less sometimes) youre in for a rebuild.
Car enthusiasts like ourselves who keep our cars and rack up high kms need superior additives to prolong our engine and turbo life.
There is no snake oil here with MBL8 (unlike other additives), people can choose to not believe the long list of benefits but the only thing thats impossible to deny is just how slippery this additive makes your oil.
Slippery is good, slippery under high heat and high pressure is even better, MBL8 delivers slippery action in spades, friction is bad for an engine and MBL8 virtually eliminates it.
For a turbo this is particually good, as the residual lubricating properties of MBL8 would protect bearings against friction after the car is turned off and no oil is flowing through the turbos bearing housing.
The other property which people may or may not choose to believe is the fact it contains engineered lead and copper particles (i dont recalll the micron size) but it wont block anything up and will pass through the filter.
The idea behind this is being soft and mallable metals, under pressure and friction in the engine they can plate \ fill in microscopic pits, hairline cracks and other things inside the motor, making the surface smoother and therfore reducing friction further.
Ive seen engines pulled apart and put under a microscope before and after using MBL8 and the surfaces are notably smoother.