It's a similar version of "build vs buy" discussions that happen at every level, from "do we even build an engineering team vs outsource to contractors" to "do we include leftpad or write our own method," and everything in between.

There are people out there with high amounts of resistance to using something someone else hasn't recommended or appeared to vet, at every level.

It's often about trying to manage downside risk vs trying to maximize upside. Orgs where people are more afraid of having someone they can blame than they are motivated to truly excel are going to lean towards things they can pay other people to decide for them.