I agree that it looks like a mandate due to a sales pitch, but there's a difference between the higher-ups mandating adoption of a particular brand of a more ge

I agree that it looks like a mandate due to a sales pitch, but there's a difference between the higher-ups mandating adoption of a particular brand of a more generic technology—eg, choosing IIS over Apache, or Oracle over MySQL—and mandating the technology itself, when it's not something that's already required for the project (as a webserver is for a website). While this isn't a completely unprecedented situation, it's definitely much less common than just having to use the Big Corporate version of a tech stack rather than an open source version of same just because it came bundled with the package your CEO got sold.