My biggest gripe with this, though it seems sensible on the surface, is that these numbers are often simply pulled out of someone's ass to argue their stance. O

My biggest gripe with this, though it seems sensible on the surface, is that these numbers are often simply pulled out of someone's ass to argue their stance. Often a manager or a front-end person who just wants to work with the new hotness. How do we know 20%(or whatever the number is) is at all a relevant estimation? Who are the demographics that this number makes up? Why is it important to isolate them or exclude them? Furthermore, at best this number often only accounts for the known people that the product is already not serving or poorly serving. Not the people who bail immediately upon realizing that this service isn't for them because they opted against an inclusive strategy.