Very true. In rally scoring era, a team's side out % is in that 60% range, typically. If you want to minimize that, as the serving team you have to serve tough.
Next time you watch volleyball, focus only on the serve receive and the quality of that first contact to the setter. That will be a better indicator than anything else, of how good the serving team is at serving among other things. USA women, we're supremely elite at serve receive at the Olympics, thanks to two Huskers of course..
Naturally you can't tolerate unusually high service error rates. That killed the US Men's team in Tokyo.