Skyrim lets you do that too.
Skyrim lets you recruit 200 henchmen?
Last time I checked you could take one companion along with you, I never did because companions in first person RPGs are annoying. If you can take more than one, then it probably still doesn't surpass your average RPG party size.
Classic D&D allowed you to hire
a whole army of henchmen. Anything less than a dozen is simply regular party size. I'm talking about having squires along with you, dudes with donkeys and carts who transport your equipment, maybe even a couple of whores to keep your party company during camping! A proper entourage, like medieval knights would have - or do you think they carried all their armor alone? LOL
High level D&D characters could afford to hire dozens of henchmen, and it was intended for them to do so. Show me one computer RPG that lets you do that.