There is no "scale" so to say. To create MS Windows which has lets say 50 mloc, versus MS Calc which has maybe 1/1000 lines of code compared to Windows you don

There is no "scale" so to say. To create MS Windows which has lets say 50 mloc, versus MS Calc which has maybe 1/1000 lines of code compared to Windows you don't "just" write x1000 times more code and done. Writing one Windows is many orders of magnitude harder than writing a thousand Calc sized apps. That's why "scale" don't work, it's not scale, it's difficulty spike. If you'll hire large enough corp, with several hundred expert programmers (no trainees , no juniors), and do what they think they want - don't interrupt them from flow, schedule almost no meetings, communicate strictly async via email, allow then self organize and self manage - I think that such a project will be an epic sized fail.