The Macification of Windows has been in progress for years -- and it makes no sense! When Microsoft designed the UI for Windows 95 they did extensive user studies and everything from how the start menu worked and the task bar was carefully figured out.
They've spend the last few decades undoing all that work piece by piece until nobody actually knows how to use it anymore.
Windows 95 is under-appreciated in the GUI histories I feel - it had many things that became 'standard' pretty much immediately afterwards (I even have a shortcut to Applications in my Dock which mimics a Start Menu).
But it's hard for a company to justify "paying to leave shit alone" so even if a maximum was reached, it will recede.
They've spend the last few decades undoing all that work piece by piece until nobody actually knows how to use it anymore.