Mcaffe and symantec not allowed code to vista

[comp builder]

i have just read in the computeractive magazine that Microsoft have not allowed security companies (Mcaffe, symantec etc) the vital code it needs for their security software to work properly with Windows Vista. Mcaffe said that vista users would have to purchase Microsofts own firewall etc or vista user's will leave their computers open to attacks from hackers etc.

what do you guys think, should the security companies be allowed the code to vista or not?

(Mcaffe also took out a full page advert in the financial times warning users about the above incident)