Nvidia-Backed Firmus IPO CollapsesTakeaways by Bloomberg AIIn 48 hours, Firmus Grid Ltd. went from a rising star of the artificial intelligence data center boom to one of the biggest deal flops in recent memory.After months of touting itself as an essential artificial intelligence play, the Nvidia Corp.-backed company was on the cusp of pulling off one of Australia’s biggest-ever initial public offerings of up to $5.5 billion, and at a valuation fit for a top 10 player in the industry. But that...