[rootusrootus]

What would be an example of that? Most that I can think of involve a company (cough BMW cough) offering a feature they used to sell outright, for a monthly fee. The fee being much lower than the outright price of that feature. They're still offering something of value, in this case convenience and lower cost (if you don't want it all the time, buying it incrementally may well be cheaper than buying it outright; Tesla FSD comes to mind as a contemporary example).

I think the problem most people have with the BMW trick is that they include the feature physically, but disable it. That does almost smell like rent seeking, but I think it does not quite get there. Manufacturers routinely hold back a bit and don't deliver maximum capability. For reasons like emissions, or longevity, whatever. This isn't much different IMO, if you're not paying anything for it then the fact that they included it anyway is immaterial.

Probably the most common kind of rent everyone thinks of, property rental, is also not rent-seeking. There is value in what is being provided.

To go back to a car analogy, it would be like BMW engaging the brakes on your car and then charging you a fee release them so you could drive (even better, making it legally required to pay the fee in order to drive on public roads). They're not providing any value at all, and then demanding money for it.