Former PwC employee Donald King has a bleak warning for workers not using artificial intelligence yet."If you're not using AI then you should be worried I use Perplexity to do really deep research or competitor analysis," he told 7.30It costs Mr Diwakar "a couple thousand" dollars a month in AI subscriptions to run his company.When he started working at Meta in 2018, he says AI was like an unreliable assistant."In the early days it was sort of gimmicky