Big Techs $600 billion spending plans exacerbate investors AI headache

By Lucy Raitano, Dhara Ranasinghe and Chibuike OguhNEW YORK/LONDON, Feb 6 (Reuters) - A planned $600 billion artificial intelligence spending splurge by big tech firms in 2026 is adding to investor unease as they assess the implications for profitability as well as a potential existential threat to software firms.Shares of Amazon, which had announced a $200 billion capital expenditure outlay, slid 7% on Friday while Alphabet lost 3% after the company said on Wednesday that capital spending could double this ...