I've made a living writing custom software for engineering, embedded with engineers, that fixes problems with these monstrous systems, and which IT could never implement in 100 years.
So, yes, companies with CIO's who want to make a name for themselves (and probably collect a kickback in the process): PLEASE continue to implement these hundred-million dollar IT systems. You MAKE a lot of extra work in the process, guaranteeing job security for everyone who has to use them, and work around them.
You'd think that Fortune 100 companies would put people into positions like the CIO or CTO who are sharp enough to understand how this REALLY works out, but I guess those kinds of people aren't politically savvy enough to reach that position.