Why are "ledge" style carry handles not standard on every SUP? Do Naish have a patent or are their other problems with them?

I'm a total SUP newb and an hour into my first demo day I realized it was a no-brainer that this type of handle makes carrying these beasts a huge amount easier. Surely SUPs have been around long enough for expert designers to realize this. I can't see any significant extra cost being involved either.

Maybe SUP designers have SUP slaves to haul their craft to the water's edge? I'm baffled. It must be a patent thing I am guessing, as it's too obvious that they are the way to go. I wonder if Naish could patent such a basic idea though. A bit like patenting the door handle.

On the plus side of all this, my fingers and forearms are now like those of a rock climber from carrying my non-Naish SUPs with my fingertips!