I get what you say. But are you, let's say, a Catia ISO programmer who has been thrown as a leader of a project team which purpose is to buy some piece of a tie

I get what you say. But are you, let's say, a Catia ISO programmer who has been thrown as a leader of a project team which purpose is to buy some piece of a tier software/project that will automagically cut your programming time by half? He may be an engineer, whatever that means, but still: the average joe in that position will not spend a single second on thinking if he expects the solution he's buying to work for a reasonable lifespan. He's been thrown in a project, that's all. If you force him to state a requirement on the expected lifespan, he will surely say 'Well, as long as possible seems good to me'. Disclaimer: statistics applies here, of course some people will care, but I'm speaking about the 80%, if not more.