This is one that we can't just solve by putting computers on the shelf.
Some people have tools that don't work on Linux natively. If somebody is using and is familiar with Microsoft Excel, there isn't a straightforward way to install it and FOSS options aren't the same. The same can be said of Adobe.
Linux as a desktop environment will have to be for enthusiasts for a while longer. Hopefully, somebody gets more feature parity with the existing suites and the transition can just work out of the box.
But Linux when compared to Windows and Mac is a case study of capitalism vs FOSS. We (Linux users) generally think Linux is better and maybe it is, but Microsoft and Apple spent tons of money to make theirs what they are today and we didn't.