There is one study that demonstrated that among top 1% SAT scorers investigated some years after testing, the upper quartile produces about twice the number of patents as the lower one (and about 6 times the average, if I remember right). That seems to imply that having more really top performers might produce more useful goods even if the vast majority of them never invent anything great.

Even a tiny shift upwards of everybody's IQ has a pretty impressive multiplicative effect at the high end.

Interpersonal skills are more important for job success than IQ, but I doubt great skills will produce goods useful across society in the same way as an invention does. A high EQ person probably just makes the local social network better, which has a relatively limited overall effect.