Microsoft expects to get fusion power from Helion in 3 years, so (if we are very, maybe unrealistically, optimistic) the wait won't be that long.
Actually, seeing recent developments, I'm afraid the only remotely realistic chance left to limit global warming is for fusion to become widely available and dirt cheap pretty damn soon! Renewables, you say? Nah, those windmills are disgusting and made in China anyway, so we're better off burning good clean American coal and oil (https://www.theguardian.com/us-news/2025/feb/03/trump-war-on...).