How common is the not my job attitude?

I noticed this is common in my organization. When a problem arises and needs to be solved, some people take a this is not my job approach. Does this happen elsewhere too?

Some rando contacted me not too long ago trying to figure something out. There were 4 people in the e-mail, as they took a scattershot approach. I was super busy of course, and I was the most detached from the situation so I ignored the e-mail and waited for others to respond, but they never did. So, I had to step in and figure out the issue because this person was just being ignored. I did some researching and managed to find out what the underlying problem would be so this person could contact the right people. Only then did other's step in and make a half-ass comment or affirmation of what I said. I feel like this person could have contacted the right department from the get-go or have asked their boss for guidance, and if not the other qualified individuals could have helped them out.

In some other occasions, I've had to work with people and rely on their expertise to help me accomplish my goals or projects. For some reason there are people that think I'm there to train them. I send them some thing that I'm not certain about in hopes that they, with their expertise and tools, can figure it out, but they ask me about it and expect me to get the answers. First of all, if I knew the answer I would happily walk them through to get the solution. Second, its part of their job to know the answer and they should want to know the answer,  but apparently they don't give a shit and expect me to figure things out. I had to contact their boss' boss to start a conversation so they could actually try to get help. I hope Sr. Boss stopped and thought, why the heck is, allegedly,  Anonymous -3rd Year Analyst contacting me to ask me a question on behalf of one my department staff.

Yeah, I understand their training was probably as shitty as mine, but for some reason they think I'm supposed to get the answer for them. Yes, I need to know too, but there is a clear expectation that they are the subject matter experts... I can't believe they would actually take the not my job attitude when it was their job. I have my weaknesses too but I try to solve them.