> You would really purchase something based on past experience with the company
Absolutely. Companies that make bullshit products very rarely get their act together, so why wouldn't brand loyalty be a thing when one encounters a quality product?
> after all the old models were pulled and this new line of WiFi connected dishwashers replaced them in 2023
That is news to me. If true my next dishwasher is going to be a Hobart from the used restaurant equipment shop up the way. Incidentally I just looked into it and Bosch claims that their HomeConnect enabled dishwashers function just fine with no internet connection, so there is that.
There is no customer loyalty, so with brand loyalty you're only ripping yourself off.
Only if brand quality actually declines. The idea that having found a good product one should then never purchase another product from the same manufacturer is bizarre.