Auditing firm PricewaterhouseCoopers has warned that the platinum industry was unlikely to meet the demand for the precious metal in the medium term, IOL reported. The firm released a report on Monday claiming that the supply would be subdued as a result of a lack of investment in the industry. The report was in line with previous studies on the platinum industry that noted that a deficit in platinum supply would deepen. The World Platinum Investment Council has also warned that the supply deficit for the metal this year would be higher than previous forecasts.