Planned obsolescence is absolutely to the benefit of corporations if those goods are being rented. Non-durable goods are inherently profitable to rent out at above the cost of outright ownership, because then the companies involved can double dip on the consumers paying the costs of producing the good as well as claiming depreciation on the good the company still technically owns. It's a similar concept to why owning durable goods and renting them out to consumers is so viable.

I imagine you're looking at it from the avenue of "if those goods last longer, they can be rented for longer", but having to manage and store more durable goods after consumers have moved on to newer and better things is a considerable cost. A good that has to be returned is often better discarded, from the company's point of view.