Not sure is you have same concern, that the name of Power BI Personal Gateway might not be the best from my point of view.
It is indeed not personal it is used by desktop, workstation etc to feed data to Power BI. It might be better to say:
-Power BI Data Gateway (for non-server environment)
-Power BI Desktop gateway
I tend to agree with you. Something that runs as a servivce and is intended for a corporate user is hardly "personal". However, there are many flavors of a gatway right now that work with Analysis Services, Azure Data Factory and Power BI so once we have a good handle on a roadmap of this product and all flavors of it, the name may make a lot more sense.