I will drop my 2 cents here from a manufacture/distributor profession. In my industry there is some cross pollinating and we private label for brands across multiple industries and uses. In some cases it is a relabeled product, in others it isn't and is a custom design. The consumer will not know what is a relabel and what is custom. Depending on what is different and how the company buying it markets it you may see some design changes.
Now taking that and applying it to a camera sensor, Nikon like my customers won't publicly disclose who made a sensor. They are also likely not going to engage in public let alone any conversations on if it is custom or off the shelf.
Leading a sales team who negotiates and works between customer, engineering, manufacturing and distribution I can for a fact tell you that not all customers have access to everything we do. We do in fact hold back some items that we sell direct into the market and don't want a customer competing with us. We make available other products they can sell but are not a direct match to what we have under our brand. It would be foolish to think Sony for example doesn't do this with sensors.
Even if you assume Sony never made cameras but did a design of a new sensor they may only sell it to some customers, they may sell it to anyone. It depends on production capabilities, supply contracts, who will pay what for that production capacity and how close of a relationship do you have with x customer.
Lastly, saying someone has a "lab" doesn't mean that lab is doing from scratch R&D or more validating design of an off the shelf product.
Now taking that and applying it to a camera sensor, Nikon like my customers won't publicly disclose who made a sensor. They are also likely not going to engage in public let alone any conversations on if it is custom or off the shelf.
Leading a sales team who negotiates and works between customer, engineering, manufacturing and distribution I can for a fact tell you that not all customers have access to everything we do. We do in fact hold back some items that we sell direct into the market and don't want a customer competing with us. We make available other products they can sell but are not a direct match to what we have under our brand. It would be foolish to think Sony for example doesn't do this with sensors.
Even if you assume Sony never made cameras but did a design of a new sensor they may only sell it to some customers, they may sell it to anyone. It depends on production capabilities, supply contracts, who will pay what for that production capacity and how close of a relationship do you have with x customer.
Lastly, saying someone has a "lab" doesn't mean that lab is doing from scratch R&D or more validating design of an off the shelf product.