I get the impression that every influential entity has plans of creating its own currency. There's even speculation of Facebook creating its own ICO.
Do you think that fractionalized ownership will be applied to everything? Are all assets going to be tradable?
If Facebook launches an ICO they will sell a token that you will be able to use on their platform to tip someone if you like his or her photo, to play games, things like that. They are not going to sell company shares through an ICO and no real world company will do either.