Bingo. It's not the charging, it's the port itself. But the fee and lock-in also apply to data-using accessories.
Wired iPhone headphones aren't compatible with other phones, for example, and if you've purchased (e.g.) an expensive FLIR phone-mounted thermal camera, then you're less likely to jump to the Android/USB-C ecosystem at your next phone upgrade.
How much money does Apple make from their licensing? Point me to even one estimate that shows me the money that Apple makes on the Lightning port licensing, and what fraction of its overall profit, loss, or even revenue, that the Lightning licensing comprises.
The first is size -- lightning is thinner than USB. But other phones have USB-C, so this is probably not that big a hassle.
The second is their customers. For every customer that wants USB-C on their new phone, a dozen more want all their existing accessories and cables to continue to work when they upgrade their phone.
[1]: https://www.macrumors.com/2019/03/29/apple-officially-cancel...
(Not to say anything about the veracity of the waterproof argument, just that they make it)
The thinnest smartphones on the market currently are all USB-C phones so that does not really seem to be an issue. These are a good 2mm thinner then the thinnest iPhone ever made.
That said it’s moot. I’ve got a mix of everything in my house and some of it won’t be upgraded for a very long time.
I've actually switched to Macs already when USB-C was introduced (late 2016), so I totally missed the original Magsafe. I recently got a new Macbook Pro 16, which has Magsafe-2. I never used it before and for my use-case I don't see much use for it now either. At least at home and in the office I have external displays, which with single USB-C cable get the signal and charge the Mac. Before it was definitely better than any other laptop charging connector, but advantages USB-C provides overwhelm Magsafe use for me.
I need to work, not infrequently, from the dining table with a laptop plugged into the wall. I have two large boisterous dogs and two not-so-large but still boisterous children. They occasionally tear around the house, and the dogs have snagged a cord and destroyed a laptop by pulling it off the table back in the old pre-magsafe days. Magsafe prevented damage to multiple laptops for me.
While I love the single-cable docking angle of USB-C, I'd give it up for magnets if I needed to. For my thinkpad, I actually have one of those magnetic USB-C cables to use at that table.