Is artificial intelligence making big tech too big?

When ChatGPT took everyone by storm in November 2022, it was OpenAI, the startup behind it, that seized the business world’s attention. But, as usual, big tech is back on the front foot. Nvidia, maker of accelerator chips that are at the core of generative artificial intelligence (AI), is now duelling with Microsoft, a tech giant of longer standing, to be the world’s most valuable company. Like Microsoft, it is investing in a diverse…