> It won't even cost anything:
It's costing Apple probably tens of millions of dollars of annual revenue from Lightning cable/connector sales and MFi licensing fees to other vendors.
At the same time, Lightning has been getting a bit long-in-the-tooth (USB2.0 speeds are impractical for making local backups of iPhone photo libraries) - as much as I want to believe that Apple would have switched the iPhone over to USB-C within a few years, I realise it's equally possible they'd have introduced a "Lightning 2" or similar.
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There are still rumours out there that the iPhone 15 could be port-less in Europe, and so only charge via Qi - which coincides with Apple actually increasing the physical spec gap between North American vs. East-Asian models of iPhone for example (e.g. no SIM tray in NA vs. but people in SE Asia get physical dual-nano-SIM trays - and still no return of the headphone jack.