In my decade-long career as a lawyer for customers who buy enterprise IT, the only company that I consider more obnoxious across the table than SAP is Oracle. If you are doing business with these companies, you pretty much deserve what you get. I've seen a few CIOs lose their jobs when ERP falls apart (it almost always does, for a variety of reasons).
I'm not saying there isn't a bunch of useful technology, but these aren't technology companies – they're sales organizations, and that side of the business is not pretty. I can't understand why anyone does business with obnoxious sales organizations like these in 2011.