I think the iPad fits this description pretty well. It’s nowhere near as “powerful” as a modern laptop, yet millions of consumers are choosing it over the $1500 machines they would’ve used a decade ago.
There are a lot of constraints built into the iPad, but those constraints haven’t cost us much in terms of what an average user can accomplish with it. Average users don’t buy computers for their gigahertz or gigabytes. They buy computers for their ability to browse the web, check email, and look at Facebook.
None of those things require a whole lot of “power.” They don’t require the ability to have two windows side by side, either, and the iPad does just fine without the ability to do so.
This works out just fine for just about everyone, even a power user like myself, because I know I can only really focus my attention on one thing at a time.
It’s amazing how many “power” problems become non-issues for average users, by simply restating the problems of computing with that simple truth in mind.
In designing that constraint into the iPad, Apple took advantage of the limits of human attention to build an operating system that knows how to use more of the “power” it has on just the thing we’re doing right now.