[lbriner]

I think many companies have a short and medium-term view but not a longer-term one.

People should know that hardware will become obsolete or fail, that software will become unsupported, the supplier might go bust etc.

You need to be able to run generations of IT in parallel so that you always have newer hardware/software getting used/proved alongside the old nonsense and if you will need to replace an aging system, you better have seen it coming enough years earlier to give you time to find a replacement.

Also, large corporates have a habit of over-customising what they want so a new system has to be completely bespoke = slow and expensive to replace.