When the economy was better and companies were making more money, a lot of the larger ones would just buy a car themselves and develop parts off of it. These days they rely on customers to drop their cars off for R&D and the amount of people who can leave their car with a company for weeks or months at a time is very slim. It also costs a lot of money to R&D a new part and vehicle sales aren't very high so its a big mix of situations revolving around nobody having any expendable cash. Just a sign of the times.
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