> I mention all this free of ethical opinion. Just want to clarify that it is almost certainly not just a simple act of goodwill. Despite this, we can all—at least for now—benefit from such generosity.

I agree. It's still refreshing to witness as it's not something you see every day (ever?). Things are impossible to do a certain way until they're not. If everyone shared patents, we could focus on innovation. Yes easy to say, and easy(er) to do in a new field like Tesla's when they started, but again, it's a refreshing respite from the status quo, that is all.