That really doesn't seem like a lot of time for them to respond. Especially given that for 10 or so of those hours, people are probably at home, asleep, or with their families.
I see what you're saying—but companies regularly respond to things like this very quickly. At least to say "we're looking into it" or "can you give us some time to respond." Apple and every other major company has people on call for things like this 24 hours a day, they have email on their phone ... the company saw my questions and chose not to respond. They still haven't responded or acknowledged it.
Apple's approach is to pick favorites, like Walt Mossberg, and then to play its handful of favorites off against one another. (Time gives you a bad review, Newsweek gets the next exclusive interview; or it's NYT vs WSJ.)
The rest of us are generally ignored, so we have to pick up scraps from the chosen few.
Obviously the big titles get more attention than small ones -- nobody has an infinite supply of time -- but companies like Google, Microsoft and Intel cope with dozens if not hundreds of journalists worldwide. They even deal with journalists that they think view them unfavorably.