Repeated PD is very different. The whole point of a cartel is that everyone inside is incentivized not to cheat, and it works as long as they agree on what's fair. The problem for cartels is people not in the cartel.

It’s well known that some OPEC members cheat nonetheless.

I'm not fully informed about the secret meetings of OPEC, but I would read things not so much as cheating as that everyone agrees that Saudi Arabia will reduce output - anyone else reducing output is reducing by the amount that will happen anyway because of wells drying up.

Idk what Quickshare is, but AirDrop has only worked like 25% of the time for me

Quickshare is the Google alternative to airdrop

So what? Anyway the more important difference is it requires both computers to be on the same LAN. The main point of AirDrop is you can share between two devices with or without LAN, with or without internet.

It's LAN only, so those networks will block it.

I only use it for sending a bunch of photos that wouldn't go so well over iMessage, usually on vacation. And sometimes that vacation involves not having cell service. Otherwise I'll usually message a single photo to someone because AirDrop is finicky.