Symantec and McAfee have a business model centered around the insecurity of another product.
Lately Symantec and McAfee have been crying and speaking loud, they're upset at Microsoft.
Can't really blame Microsoft for wanting to protect the kernel since it's been vulnerable for so long.
Although I can understand the eluding "conspiracy theory" since Microsoft has their own anti-virus, anti-spyware, and software-based firewall products now.