I think I'm missing something. These sounds like generic industry apps, but Fortune 500 companies don't use generic apps, they use stuff tailored to their business. It says they are customizable, but that's a lot easier said than done.
Tailored is exactly what IBM wants. They are basically a consulting and services company nowadays, having let go most of their hardware divisions after analyzing their business and deciding they weren't profitable. They will be exceedingly happy to sell you consultants time to tailor the apps for you, in fact, if the app didn't require tailoring, they probably wouldn't want it in their line up.
26 Billion of their 2013 revenue came from Software division
14 Billion came from the Systems and Technology division
2 Billion came from the Global Financing division