Independent developers have fulfilled their function and are no longer needed.
Dunno if you've been to an IDF, but I'd say that IDFs have fulfilled their function and are no longer needed. I went to the Skylake IDF and after a very predictable presentation there was an opportunity to ask questions. It went roughly like this: What time is it? The question was what time is it. Intel is an industry leading leader committed to developing customer solutions. We are not disclosing what time it is now…
A show like IDF clearly makes less sense if you're increasingly unwilling to say much about future directions. It's also entirely possible that the projections for event sponsorships, etc. weren't looking to be where Intel wanted them to be.