COTS - Often confused with "One size fits all" - It never does, even COTS is configurable off the shelf and consequently will contain code or modules which can be enabled or disabled. Often clients pay mega bucks for a wire link or the simple enabling of code already written and installed. Check out any phone or laptop...multiple versions from basic all the way up to all singing and dancing..15 versions but only one or two pieces of hardware...all enabled by hidden configuration or inaccessible links.
Airlines customise/optimise extensively to specific requirements and national standards. Interiors, Comms, etc.
The old adage....
Vanity = I can squeeze the supplier to get my solution at a "COTS" price.
Sanity = I may have to customise a few things to get it to work as required
Reality = I cannot make it work without it becoming virtually bespoke.
Whoops: Budget blown.
Litigation, Nightmare
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