This is only out of my imagination, a fiction but I guess it will be a fact in the future when internet becomes available for each person in every house, when it gets more advanced and faster.
It’s a giant operating system which you don’t have to install on your own machine, every one has a login information to his online operating system account just like how you login your daily mailbox. You will be able to do what ever task you’re doing now through Windows OS or any other operating system you’re using, you can install programs, save data without even have a hard disk space, because every thing will be on your online hard disk, it’s one giant operating system and it will unify all machines so programmers will never be concerned about OS compatibility anymore , this is really a big point.
I think google is seeking to achieve this, google is no more just a search engine and will not stop there and frankly! I think it has what it needs to build that giant OS.
On the other hand, please look to the new emerged collaboration between Microsoft and Cisco, this should be considered seriously, with the marriage of these two giants a new giant baby may be born. I don’t know which of which is the husband and the wife 
And last Amazon is planning for something big, a lot of things have changed since it’s release of Amazon Web Services, and maybe this new giant OS will be built on top of Amazon Web Services.
I’m not sure if this is coming soon or if it will come at all, but there are really good attempts these days even though all still in the early phases and not as mature as my idea of the Giant OS, but everything has a start and who ever gonna reach the final phase of the giant OS will be announced the king of kings, the king of both internet and PCs world.
