Yes - those acts in themselves are indeed acts. But!

One can then own land without actually doing anything with it - you can let it out at rates for others to use. You can't just let a car factory sit. And if you just own the building and land, and do nothing else, then yes- you're just charging rents. But generally owners have to work to own a factory, if at nothing else than making operation policy decisions.

Perhaps a trip thru "Poverty and Progress" is in order? George is better at this than I am.

I own 0.000012584948% of all the factories that Ford owns (500 shares of F) and I've never done a lick of work nor made a single decision for them. I own a similar tiny slice of many other factories. All perfectly passive for me.