So I think we have a consensus. Rather than focus on beating the competition by building a superior product with the latest tech, it seems Campagnolo should go back to the days of yore with shiny silver mechanical legacy-style components, performance be damned. Go old school marketing as well, spreading the word with the bike shop gossip boys telling stories of the old days, pay off the popular legacy cycling magazines and sponsor the local seniors club. Find some old Volvos or vintage Citroën vans, and support the various Eroica rides, and it should do the trick.
They will need to be quick about it, as the new target market demographics are not in their favour, and they are probably the least-spending, cheapest segment of cycling enthusiasts. It seems a bit of luck might be needed as well.