Why so little attention towards CMS integration?

[Cyburbia]

When I look at open source content management systems, many offer integration with phpBB and SMF, but vBulletin and Invision Power Board integration is almost nonexistent. Message boards on CMS portal sites are often filled with requests for vBulletin integration, with responses usually falling into three categories - "me too". "if you want it so bad, go code it yourself" and "out of principle, I won't code it, even though I could, because it's not open source"".

A common theme in many posts here and at vbulletin.com is content management system integration. There seems to be a huge demand for vBulletin/CMS integration, but there are so few projects out there; the excellent Drupal integration effort, a bridge for Joomla (which doesn't offer true integration), and that's about it.

"Check out vBportal/vBindex/vBadvanced." While I respect the effort that went into vBindex and vBadvanced, they aren't true content management systems. They serve mainly as portals or entrance pages to a forum-dominated site.

"Buy Subdreamer/Storyteller/Miraserver/Virtuanews/vgPortal/PhpCow/NePHP." Again, they're probably all good programs, but they have a limited userbase compared to the open source content management systems. Some of those programs are one-man projects, development is slow or stalled, and their future is uncertain. Except for vBulletin integration, they usually don't have the feature set or extensibility of most open source content management systems.

[nasal_voice]"Well, go code it yourself!"[/nasal_voice] The typical response from the Slashdot/ponytail-and-neckbeard types. Unfortunately, most of us aren't expert PHP programmers. The majority of us probably can't program, period. If we were, we probably would have coded our own message boards instead of paying for vBulletin.

"vBCMS is coming Real Soon Now."
So are flying cars, universal health care in the United States, the Second Street subway, discovery of the Oak Island treasure, Godot, the revitalization and gentrification of Detroit, and Duke Nukem Forever.

With the outcry of vBulletin users begging for a CMS, why are there so few CMS integration hack/mod projects? Is there even a demand for integration with open source content management systems?