I am not sure I completely understand your question, but you know me...
1. My system is a Totally Stable System in as much as Microsoft can be.
2. You must have caught the "god like powers, lol), but I would cut some slack as it was removed. (I think -- long post). But, yes, someone with a great deal of IT experience could come a lot closer to getting things right.
3. I find it interesting (not bragging) that if I have an issue (I know that contradicts number 1 above, the first thing I do is troubleshoot my network, my clients, my server, AC, etc. I don't immediately assume it is AC and SQL Server
4. The larger the practice, the greater the chance is that there will be issues.
5. If one is using a regular computer for a server and if there are other programs on that computer, SQL Server Express will take up 1GB of RAM. That is the first thing to look at.
6. I was lucky to be able to set up my network from scratch with perfect cable runs by professionals, perfect terminals at the end of the cables (makes a big difference), perfect patch cables, a very nice switch, a Cisco PIX router firewall, Roadrunner cable with incredible speed and on and on. I was also there when it was put together and designed.
As I have said numerous times, my IT friend (27 years of experience in nothing but building and fixing and monitoring networks) has gone to huge networks (banks, large companies and medium sized companies) and troubleshot many issues checking the network. I can use some basic tools to see how my network is running, he can use a $15,000 fluke-type meter to see that one cable is running at 700Mbs while another is 200 and yet another is less than 50Mbs. That is a powerful thing.
Using your analogy if I understood it correctly, a patient MAY get the best care at the Mayo clinic just as you may get the best IT help with Microsoft MVPs and MCTS with 20 years of experience, but a patient has a lot better chance coming to me than they do going on WebMD or reading a textbook.