The way I look at anything like this is similar to some of the thoughts above...does the innovation foster and encourage creativity and personal innovation? it has nothing to do with the device...whether it's a computer or a tablet or a smartphone. It's what can you do with it? The pc is a device that allows a customer to build it from scratch, independant of any company. Most people don't but the opportunity is there. Then, you can use whatever OS you choose, whatever software, even design your own software, design your own hardware...this is why the pc changed the world.
The smartphone currently doesn't offer any of this. The benefit of today's smartphones is that it makes computing easier for people who are NOT trying to innovate or be creative. Basically, it makes computers easier for people who don't like computers. It's what the microwave did for people who don't want to cook. Do the microwave people argue with commercial quality oven/stove/grill manufacturers about which is better? No, it's a silly argument. Same with a smartphone. it's not a computer, it's nothing like it in the true sense.
All these people using smartphones primarily are people who never truly cared about what the possibilities of the pc was.
Now, the actual smartphone idea has a lot of potential, but the stupid ass politicians and corporations have to be willing to help out the masses on this one. If we can build our own smartphones, then it will become a revolution like the pc 30 years ago. raspberry pi is the beginning. and ultimately, the world is soooooo very close to realizing this. All it would take is the ability for users to buy a cellular chip at fry's the way we buy hard drives and motherboards and stuff.
it's just that damn cellular chip and the ability for anyone to connect to an existing cell network. Once this happens the world will change. That's what I'm waiting for. One day, i'll be able to go down to the store, buy a cell chip, call AT&T and activate it, and use it however I like.