I get what you are saying & I agree. There are huge advantages in doing things this Apple way. Your Mum gets to have something that works for her first, the 4% of people that have a preference for Thunderbird over Mail (just an example) because they like the way that it handles their profiles (again, just an example), well they are not the no. 1 concern. That makes sense. A product for the majority.
But, it is not just alarmist. The iphone has catalysed lots of innovation. Great innovation. This will too. It is all sanctioned innovation though. Unsanctioned innovation is important too. As things mature, it will become increasingly important.