I've been working for a couple decades in the manufacturing system space. For several years, multiple companies came to us "we want to work with you on 5G adoption in manufacturing".... They wanted us to come up with ideas of why manufacturers would deploy private 5G networks within factories. I couldn't come up with any good reason.
I typically work wit large enterprises, and when you're spending 100's of millions, if not billions of dollars on a factory, why would you use cheap IoT sensors, when you can hardwire industrial sensors you know will work for a very long time? and then you don't need to deal with all the EMF noise manufacturing hardware produces These other companies trying to push 5G would make suggestions, and I'd respond with "we've been doing that for years with wifi". The whole 5G IIoT (Industrial IoT) was a solution looking for a problem.