> Has there ever been a bigger missed opportunity in business than Docker managed to preside over?

Digital had VMS, and lost slowly in the marketplace until they lost Dave Cutler to Microsoft, then VMS started collapsing. Cutler showed what he could achieve with decent backing and a company not wedded to selling expensive proprietary hardware.

Digital had the Alpha processor.

Digital had the StrongARM processor, the fastest commodity ARM chip on the market, and sold it to Intel because what future did ARM have anyway?

Digital had AltaVista.

There's plenty more, but those are some highlights.