Arriva, the British bus and train operator, has been bought by Deutche Bahn and, in the wake of the upset over Cadbury's, Labour and the Lib Dems want to "lock short-term investors out of voting", according to The Guardian online. The Liberals propose that takeovers should be subject to a public interest test.
Interactive Democracy could allow the wider public to initiate a debate on limiting specific takeovers. Such a debate may be led by the unions, customers or suppliers. On the other hand, shareholders and the investment markets may argue that the free flow of international capital is a crucial element of our burgeoning quality of life. The debate could be fierce, but automatically skewed towards British interests as foreigners wouldn't be allowed to vote.
The key difference between ID and Representative Democracy in this regard, is that those with a vested interest can contribute to the debate, and vote, and it's not just the corruptible politicians who would decide on the policy.