[Piskvorrr]

The mistake seems to be "there's a standard [and it Works more than 80/20]." There are multiple to choose from, and in versions, and each has revisions, and now Foo v2.1 doesn't want to work with Foo 2.0, except on even Mondays, and don't get me started on Foo 3.x with Bar 1.5.x!

You're handwaving away all the inherent complexity, but shoveling it off into a box labeled "standardization" doesn't make it go away.

In other words, the interoperability is very much "try to swap these components, if they work, yay, if not, try swapping them for something else until you get a combination that works." And that's for non-critical components.