SOI and A Very Dead Horse

ZapThink put this out on SOI(Service Oriented Integration). We kind of have been beating this horse to death for a while but after reading the article I see we are still not completely there yet. This question in particular got me -

is SOA's purpose to solve integration problems, or is it more of a business transformation approach centered on implementing agile business processes?

I go back to this post - http://www.thegreylines.net/2009/01/soa-versus-soi-continued.html . Agile business processes? How exactly would you do that without bringing systems together (integration)? You would pretty much just have to have the one system. Anybody work in enterprises like that? We are not talking about moving data from point a to point b, again see previous post.