The biggest ego's in fairly recent times belonged to Ivor T (Linn) and possibly the late Julian V for a while, until Ivor stomped all over it... Absolutely convinced that theirs was the only way (unless you caught Ivor off guard over dinner, but even then..). At the time, I reckon certain people at Quad were the same in an opposite direction (not Peter Walker, but one or two of his key design folk, as I suspect PW was increasingly taking a back seat then, in the late 70's).
Some of us have been around so long in this industry history is coming to repeat itself, but please don't think that AOS is the sole outlet for Techie tweaks, it's a big wide world out there...
Tear down these walls; Cut the ties that held me
Crying out at the top of my voice; Tell me now if you can hear me