Re: "Not an uncommon story", you mean.
"hugely costly tenuous and superflouous value add stuff that DEC added that eventually put them out of business"
Actually, I think DEC went out of business (or value lowered until they were bought up, more realistically) because they were "old tech" and the computer market had moved along. They sunk a LOT of effort into "Alpha with NT" with little effort in making PCs and cutting edge peripherals. HP, on the other hand, "did that" and survived the 90's.
And Sun won where DEC once ruled. Maybe Solaris helped?
[shock indicators are cheap - a cost benefit if it helps you prove that someone kicked the cabinet causing a head crash, thus voiding the warranty]