the need to merge the patent like it has been for plane seems reasonable. the notion of taxing cold fusion is classic for IP or any business. Windows is a tax on PC... state or private is a polemic detail.
the CF inventors could merge their patents to accelerate the developpement of applications before the patents expires. patent is a temporary monopoly granted in exchange of publication, to avoid secret and inventor abuse... one national or international body could help, or even be create to help, that mutualisation. stealing the patent to the ublic will be a solution hard to impose in today's world, but possible sine the real bosses of the worlds are big corp, that don't yet own the patent... so asking the pupet state to steal it is an option. this will be explained in a popular way, but will be done to avoid the incumbent elit to lose their position... so in my opinion the inventors should mutualize quickly before being screwed by big players.