Comment by SOLAR_FIELDS

Indeed. The use case is like this: I'm a Devops/Platform/SRE/Infra/WhateverYouCallAWSAdminInYourOrg at BigCorp and end users are asking me to use software XYZ. It's on the AWS Marketplace. I have two choices. I could either

1. Go through a 1-2 month procurement process where I have to deal with not only the vendor's sales team on who I'm buying from but also probably multiple teams in my BigCorp. Vendor sales team wants to feel relevant and so I'm sitting in at least one meeting where I'm telling them I just want to buy your shit make it as fast as possible. But then the people in my BigCorp likely not only don't understand why the software is necessary, but need to feel relevant and as such will make me fight through bureaucratic hurdles. I have to get compliance involved. Finance involved. If there's a procurement team I have to get them involved. Probably there's a security questionnaire that my bigcorp's security team uses. I have to send that to the vendor's sales people. They have to send it to their security folks. Security folks on their end have to complete it and send it back. I have to send approvals up the chain on my end, after I've successfully convinced some clueless nontechnical user why software XYZ is important and no, the shit half baked thing we already have doesn't work.

OR alternatively:

2. I can go to the AWS marketplace, click a button, and now my AWS bill goes up X thousands of dollars per month and none of the bullshit from 1 is required. Because AWS is already an approved vendor. Everyone except perhaps someone monitoring the AWS bill for large increases is happy and doesn't care (well, maybe the security team does, but hopefully they aren't tattling on you to the procurement people who have nothing to do and want to stick their fingers in the process and we can make that process go quick), and I just need to tell that person that we are doing it.

It's not always the exact narrative I just laid out, but the gist of it is pretty much procurement at every bigcorp.