I don't think it will get that high. There are too many jobs that need people to do them. I know 3 other people who work online for their full income, yet I know 30 people who don't. Many people have no interest in working online as they prefer getting out. Also a lot of people don't have the skill to work online.
My entire job is online, but I still go to a office and do it. I need to find something I can do online, and then move my office to somewhere tropical.
I'm sure it will get to a point that so many people do it that you won't be able to make very much money from it most likely before it gets to 60%.
Those who are technically sound will have enough projects to grab and they can mint money here