Isaac doesn't have much of a leg to stand on here. Values of companies can go down as well as up. As the majority owner of a company, you can issue more shares in the company to raise more funds. Didn't Hammam do something similar after taking over (I think he issued 3 million shares, but my memory is sketchy).
I worked at Capita a few years ago, and they did exactly the same thing. The effect for existing share holders was that the value of their shares went down.