Eric has been promoting the idea of an “X-prize” -like fusion incentive for some time. It’s amazing and frustrating that this is so hard to get support for. The cost is minuscule if no one wins, and not significant even if they do (by comparison with the payoff).
Such a prize would quickly (IMO) attract private support for FF, as it has such a low $$ barrier to entry, and such a short timeline for results.