We're replacing a very nice custom SCO Unix backend developed at my work from 1980s onward (drops users into custom shell, multiple programs execute in the user

We're replacing a very nice custom SCO Unix backend developed at my work from 1980s onward (drops users into custom shell, multiple programs execute in the user context, leverages all the nice features of *nix) with a purchased desktop Windows ERP application and it makes me so sad. Literally we will move from having 1 to 2 admin who can manage 300 users, decades of automation, and totally instantaneous program execution (in C) with heavy user load on a single server to distributed, client based programs running on separate machines that all have to be patched, updated, troubleshot, etc.--(and the 5 person support team that has to go with it), communicating with a central program server and separate DB servers, etc.,etc., all because the console application is "too old looking".