Why does a definition on Wikipedia need to necessarily define an age old industry? Sure we all need the safe definitions of things in order to put them into their place when things get chaotic but when things are not chaotic are we really willing to break away from those safe definitions and color out side of those lines you speak of?
Agencies have a hard enough time producing creative work in general, how many campaigns end up being timeless? Now they are expected to deliver media technologies as well? Smaller interactive agencies have been doing this for years now; we have been innovating new ideas for launching all kinds of brand messages. Minisites, rich media banners, environmental installations, unique kiosks, online games, viral techniques, uploading, downloading, cross loading and more! Agencies are having a hard enough time keeping up in general when it comes to the web. Web 2.0 is all of the things I mentioned above and more, it requires breaking many of the rules that have been established in the Ad Biz and redefining what works and what doesn't and requires going completely against conventional wisdom.
It seems to me that the point isn't are agencies willing to invest in new platforms, because its simply not their core competency, the question is are they now willing to play second fiddle to companies that are creating new platforms. Old habits are hard to break and the agencies have been holding on to the corporate reigns for a long time now, they manage the accounts, come up with the ideas and distribute the money but perhaps that role is now being reduced because of the overwhelming emergence of technology that smaller and younger companies have a better grasp on.
Rather than buying up these smaller companies and driving them into the ground by making them adhere to old rules, why not just play nice and let the experts do their jobs in the environments that suit them best (smaller interactive firms) and let them drive the campaigns. Ideas thrive in smaller open environments and when the stresses of the corporate world take over then the ideas suffer, creating new platforms and ideas requires breathing room and coloring outside the lines and that means that new lines can't be drawn once the color is in place, you cant assume that an agency is ripe to now become a technology firm just because it has the money to do so, sometimes it takes adversity and struggle of being small in order for great ideas to emerge. –Craig Elimeliah, new york, NY