Investment is generally considered profit-seeking behavior (i.e. not rent-seeking). Building an apartment and renting it out is clearly profit-seeking behavior, but if you were continuing to rent it out doing the bare minimum to keep it from falling over 40 years later, that would be pretty clearly rent-seeking.

From this, we can conclude that there must be some point after an investment is made where continuing to benefit from it transitions to rent-seeking behavior.

Predatory loans were maligned as "usury" long before "rent-seeking" or Scary Marxists came along. For good reason. They're bad for society and the economy writ large.

I am well aware of what the phrase means, and I re-read the Wikipedia article to be sure. Maybe you read the use of the word in a different way than I did, but I helpfully included my precise interpretation of it in my comment to clarify the meaning.

> the term "rent seeking" has literally no place in a discussion about landlords

Having "literally no place" is certainly a strong choice of words, particularity as it was introduced in this thread as being a inaccurate label to apply to landlords.

Personally, I first learned about the term applying it to Feudalism, in which the (land)lords' only contribution was their ownership of the land. That example alone seems to pretty handily disprove your claim of "literally no place", in fact it's specifically cited in the Wikipedia article as the Georgist interpretation of economic rent.

Your own wiki link disagrees with you, most of the article uses landlordism as the base-level example. You've just discovered how "rent seeking" is used as a more broad term to describe many phenomena, but they're still describing them essentially in the metaphor of landlordism.