While that sounds great-- and works pretty well in the elementary and even early adolescent years for some kids...
eventually, it seems, the fact that some HG+ kids have equally advanced social needs does mean a dramatic kind of loneliness.
We're at that point now, with our DD14. She now has the metacognitive development that allows her to see quite clearly that from an interpersonal standpoint, she is a much better friend than she's ever HAD herself.
It's depressing, that realization. She lacks friends who can successfully cope with the idea that at 14, she is the top dog academically in almost every setting she's ever found herself in. Other pretty bright kids tie their egos to being "smart" and believe me, she makes them stop to do some self-examination whether she wants to or not, unless she hides some of her ability and minimizes her range and accomplishments substantively.
Which she does.
BUT-- that means that when those "friends" are sharing freely with her... she has to self-edit everything quite carefully for their consumption. It's work. Hard work.
Mostly, it's hard work that doesn't have much of a payoff for her, other than altruistically.
Luckily for us, DD seems to be highly altruistic, so she generally regards such arrangements as "fine" but she is so very, very lonely.