Because Redhat has IBM hands shoved up through it's ass upto it's brains so it's days are numbered.
Don't underestimate IBM honchos to fuck up a good thing. Recently heard Redhat dropping dev support for a bunch of packages in fedora or something.
The moment someone fucks up.. open source always brings alternatives. See: open office vs. Libreoffice.. the bunch of firefox derivatives.
Ok then hear me out. Let free content supported by ads die out. Make everything paid.