MIUs are not business people. They don't use blackberry. They do have some sort of business to do of course, but their usage of mobile phone is a mixture of work, family, love, friends, games.
People will have different profiles of their digital lifestyle.
They are TV consumers, on the couch, with their media center.
They are news consumers and producers, at home, with their internet tablet or laptop.
They are dwellers of an on-line village, and they send messages, write scraps, do some twittering, participate in a chat and, last but not least, they read e-mail.
Therefore, people have many devices and use them to do many activities. Sometimes you need to switch from a device to another, and you need your activity to be transported on the other devices. Then, you need synchronization so as to keep the same information in more places.
Just think about all the various kinds of information you produce/consume on your mobile phone:
Trying to flip the question: why Nokia is not focusing on the eldest and the more widely spread internet communication system, e-mail? Why Nokia is not working on a PC calendar system that integrates with Lifeblog?
My digital life would be marvellous if I could sync my contacts, their photos, the conversations I've had with them, the dates I planned to see them?
Nokia has acquired intellisync (enterprise mail and PIM synchronization), avvenu (remote locker), navteq (navigation technology), Loudeye (digital music aggregator), Twango and recently Trolltech (widely used GUI technology).
Therefore, Nokia intention is clear: "put contents online, use Nokia mobile computers and live with them".
OK, fine mr Nokia, but I also want a docking station, a bigger monitor and a full size keyboard :) And that's my PC, and my PC has thunderbird, and -guess what? Thunderbird is powerful and open source...