I do believe it won't be so soon as I still trust my own PC than online itself. The reason is simple as online has a greater risk of exposure to dangers.
I keep one PC as standalone without internet connection so it will avoid any trojans, viruses, etc. This is purely business PC so without fear of being hacked or being attack by external source.
So, it will not be so soon for PC to fade away in my personal view as other clients I know of are doing the same thing as what I am doing.