Today I noticed the sponsorship for the asp.net-mvc and asp.net-mvc-4 tags, it's for DevExpress.
I'm a user of ASP.NET MVC (all versions up to and including 4) and there's not a natural association for me between DevExpress and the platform. I also don't think that this association is one that most people would make.
I know that this isn't necessarily the point, and I'm not complaining about this specific association, but when there isn't a universally accepted leader/player in the field, it just seems awkward (personally, their logo looks strange).
Good examples of what I would consider natural, universally associated sponsors are the android tag, or any of the Google tags.
Note, this isn't about a sponsor for a concept as ASP.NET MVC is very much a real thing.
I also know it's removable through a user script (but I haven't tried it yet).
Looking at the accepted answer for sponsoring a concept, I feel the question is, what do you do when it fails any of the conditions of being a tag sponsor (lack of real association, not owner of the name/trademark/controlling entity)?
(Note, I'm fully aware that this is part of how Stack Exchange generates revenue, and there are probably reasons outside of whether or not a fit is "natural" as to why this is).