Then you would not get the distinctive images that characterise different makes. For instance, Fuji make cameras with Bayer and X-Trans sensors that are completely different to those made by other manufacturers. and give different results.
It is like saying rather than all of these artists all over the world painting pictures, lets just have one so all paintings will be equally priced and look the same.
I am Sorry for the confusion caused, i mean they can all have sensors made in the one location by one company but add their own signature or specs in design, its a bit like a Pharmaceutical lab that makes so may drugs for different customers you can have a) a clone or generic product that is the labs own design, or b) specifically made to the customers design/specs and branding.
It makes sense to have a sensor production run 3 shifts 24/7 that provides maximum overhead recovery and cost savings resulting in the lowest cost of goods being made as well as enhancing raw material buying power as well as help meet the utilization of AI robotic production, Rather than have each company have a small sometimes production run on a 1 shift basis with heavy manual labor costs.
A lot of this is happening in the Auto industry, i was told the Renault 1.6 ltr small vans are sold to Mitsubishi who just put the Mitsubishi badge on the front with the odd decal as a smallpoint of difference, its cheaper to do that for them than make a separate manufacturing line, it also adds more volume production for Renault resulting in lower cost and better profits all round for both companies.
The Siri Tripods i have, when you look at them they
seem to be like or possibly the same as a Chinese generic model tripod made under different names or colors globally.
Its a practice that has been going on for years but now becoming more main stream and more important as competition and cost pressures mount when margins are more critical in order to survive or grow.
MTD Lawn Mower gear, all made in China/Asia, with brand names like Craftsman, Husquvana, Rover, Victa and the list is endless, each company has their own brand attached with the odd different item or colour to create a point of difference.
Same with senors i assume ?, semi conductors ?, Chips ?, Laptops ?, some mobile devices ? etc
You can make your own phone, your order a generic case, a Qualcomm generic processor and generic screen, add some colour add a fancy name, buy under license some operation software like Android etc and away you go, market it with a good brand name and your off, your a phone manufacturer and distributor.
Some Cars are the same, your order a Chinese clone car, slap a badge on the front make it look a little different here and there with some really great colours and bingo, a new product is yours.
Camera sensors Chips are all the same essentially but have some specific specs designs that can make them a little unique or different as is the case with all the mentioned above..
Only an opinion