Interesting, I think this is actually a rising ‘problem’ and its definitely a result of our over dependence/use of email and text.
Who says it’s a “problem”?
For most of the last century, the only real-time communication possible between two normal people (I’m excluding telegraph operators and the like) in different places has been via the telephone. It’s only in the last 20 years or so that other methods have supplemented it. We now have more choice, and some methods are more appropriate than others for different tasks.
It’s funny, I work for a company who’s primary business is Unified Communications (effectively tying together phone, voicemail, IM, email, etc via products like Microsoft Lync and Exchange). Voice integration is usually consider a really big thing but IME having a good internal IM system that does presence, etc cuts down on voice calls drastically. When you can see immediately whether someone on the other side of the country or world is available, and send them a quick IM to find something out, why would you bother calling them?