Have We Forgotten Common Courtesy in the Workplace?

I'm amazed recently at a few organizations in which I have consulted in which common courtesy seems to have been thrown out the window.  I was in a meeting with a leader that was interrupted not once, not twice, but three times in less than 30 minutes.  

The first person apologized at least five times for interrupting yet continued to ask their questions of the person I was meeting with.  Was it a fire?  No.  Was it an urgent question with a deadline of less than an hour?  No.  Was this leader typically inaccessible and hard to catch?  No.  Although the first person that interrupted was apologetic their actions spoke volumes.  They obviously felt like their issue was more important than my scheduled meeting.  They also must have thought their time was more valuable than mine (only child maybe?).  And they evidently were not taught good manners growing up.  

I have to give the second person credit - they saw someone in the room and turned around and walked out.  

The third person didn't even pretend to be apologetic and just barged in and asked their questions.  Again, it wasn't urgent, the building was not on fire, and it could have easily waited for 30 minutes (maybe even 30 days).  

What has happened to professionalism and common courtesy?  Do we not think it applies at work?  Do you do this to your employees?  Come on people - respect, courtesy, and manners don't stop at the parking lot.  Let's not get so busy we think we don't have time to be humane.