"For example, they brought out OLED TVs a few years ago, but the yields weren't very good and they didn't persist with the technology to bring and push it to the market," he said.

As for the accusation that Sony is not making money due the lack of a "hit product", Rose doesn't think this was the case.

"We've actually had numerous hit products including our NEX range of E-mount cameras, which Time Magazine even declared its 'product of the year,'" he said.

The success of the PlayStation hardware and software was also highlighted by both Rose and O'Donovan as an example of a hit product by Sony that has brought money into company.

However, Rose does concede that Sony has faced incredible adversity in recent years, including the earthquake and tsunami in Japan and the floods in Thailand last year, which all affected its bottom line.