It seems... and I've only experimented a little way...the AI doesn't recruit mercenary troops?

I decided to put everything on auto in one of my current Hungarian campaigns, then I destroyed everything and disbanded all troops then ordered an Inn. It was after that I switched to auto...

For ten years no units. Just good old King Lazslo or Laszlo, a son and that's it.

So does the AI build Inns for itself in other factions? Does it "use" them?