All kinds of editors (and add-ins for popular editors) support code formatting of various kinds, so for the most part users already have the ability to solve this problem on their own.
Why duplicate that functionality so that people can have code formatted them in a way they don't like, which still doesn't guarantee it will help them spot the problem, or even the only problem (
Cutsomer_ID is spelled wrong, whether the formatting hides other errors too).
People get mad when others edit their code to be readable, to remove horizontal scrollbars, etc.; imagine the onslaught of vicious complaints here when the system starts doing it automatically.
On top of that, given the effort it would take to implement a formatter that handled all the languages SO supports, and not massively screw over a single piece of code, what percentage of questions do you think would never have to be answered just because the site reformatted them as they were submitted? As I said above, fixing the formatting doesn't guarantee the OP will be any better equipped to solve the problem.
This happened just today and, while I made a comment about it, I'm not convinced that proper indenting would have made the problem obvious to the OP, nor am I confident that SO would want to spend time developing a code formatter that would undeniably make the problem obvious (and, once again, so obvious that the OP gets it). I think that indentation makes the problem more obvious to us, but not necessarily to the OPs of the world.