A trick (on U.S. airlines) is to plug in an overseas adapter (British style plugs seem to work pretty well for this purpose), since those prongs see far less use and still grip well.
British plugs are just better anyway. The rectangular pins have far better contacts mechanically and electrically and they're arranged in a triangle so the plug can't wobble its way out.
- The outlets have shutters preventing access to the contacts, until the longer earth pin is inserted
- The live pins are on the bottom, making contact harder if it's partially pulled out. And the live pins have sleeved sections so even less live metal is exposed.
- The cable drop is at 90 degrees, typically causing less pull on the plug
You pay for it though, both in terms of extra manufacturing costs (presumably) and weight/bulk. Compare the north american apple usb-c power adapter to the british one:
It's really a very good design.