Help me answer this: If it's 'likely' to happen, then why are we not allocating 10's of billions towards it right now, to accelerate it so that it happens in 5

Help me answer this: If it's 'likely' to happen, then why are we not allocating 10's of billions towards it right now, to accelerate it so that it happens in 5 years? Many, many things can be done in parrallel. Some effort would be wasted, bit it'd be worth it. If fusion works, it's basically going to be priceless in terms of impact and value. Even starting to account for climate change ... we could suck Co2 out of the air on demand.