I'm inclined to wonder if you've ever actually entered a high intensity conflict zone in Solo mode since the various AI improvements have been made? All it takes is one wing of fresh hostile NPCs jumping in, with you being the closest attackable thing to them, and suddenly you're being focused by half a dozen ships. What's worse is you can often find yourself with no backup, whatsoever, as the friendly NPCs can just all focus a Viper and fly off chasing that while you get shot to bits. No wing to back you up, and certainly no swarm of friendly players to back you up.
Unless AI is different in solo mode and in Open mode where you're the only player around, I beg to differ. I have hunted Open High Intensity instances by myself long enough to rake in about 4 million credits in combat vouchers. And yes, sometimes if you don't pay attention and attack a wing where all ships are close by, you'll get focused. Yes, if your side gets decimated and you're in the middle of the ball, you'll get focused (untill reinforcements arrive).
But in both cases a few quick chain boosts got me out of the jam and back into the action. It absolutely cannot compare with the kind of heat and tenacity you'll face if an enemy player wing, or sometimes even a lone player, attacks you.
Trust me, if they ever make the AI comparable to real players, you won't hear a squeak of complaint from PvPers. You might hear a raging torrent of wailing from solo players though. I imagine entering a High Intensity zone filled with about 30 equivalents of hostile players would be... well, quite difficult to survive. Dark Souls would be dethroned.