My previous boss recently tried to pick up an enterprise solution. He runs a non-software company that has a lot of custom internal apps - 90% built/maintained by interns. Of course the intern-built custom apps are super buggy but the bugs get fixed immediately, and the system is tailored to the company's way of doing things. The company spent an obscene amount of money just demoing a full-fledged SAP-type thing to potentially replace the custom stuff, but they ultimately found the rag-tag web apps better and cancelled the SAP contract.

That whole situation convinced me pretty thoroughly that "enterprise" software is indeed a form of large-scale snake oil. I think most businesses can go a long way with just spreadsheets and email.