Public institution procurement
If you've ever had to procure a system for a public institution you will know that there are an immense number of hoops to jump through. This takes so much time that the system can be obsolete before you've got it.
As long as there's someone at the table who says "I think we could get it for less money" you just have to check all the options, and that takes time and money, to be seen to have carried out the job with "due diligence".
I don't know what the answer is, but it's a constant source of failure.