Canonical's business model?

"as for ubuntu dropping sparc, so did redhat (and didn't redhat also drop PPC support?). why
aren't your screaming about that?"

Fedora has an open infrastructure and a process by which community can sustain additional
arches.
http://fedoraproject.org/wiki/Architectures

Passionate community members are working hard to get additional arches up and running using
that process and the open build infrastructure.

Red Hat can't provide the build hosts or the space for every arch that Fedora could build
on..resources are finite. But Fedora does have fully open build infrastructure software that
community can use if they are able to bring the necessary resources online to support the
building of an additional arch. The infrastructure allows for decentralization of the build
system, so motivated niche communities of ppc or sparc or arm or whatever can be in charge of
building the architecture they care about as part of the larger Fedora project effort. That is
community partnership in action.  Red Hat is honest and up front about what resources it can
bring to the table and then through Fedora builds an open process by which community can bring
their resources into the effort to extend the reach of the larger Fedora project into new
areas reusing the existing software that ties the infrastructure together for the whole
project.

Fedora is designed to be bigger that Red Hat, and the secondary architecture efforts underway
are the fruit of that truth.

-jef