[oyoman]

I think people needs to put a bit of perspective on this :

the FCC is a project for the next 70 years. It is supposed to be operational after 2040 at the earliest if I recall correctly (20 years from now more or less), and to run for around 40 years.

So if you do a very simplistic calculation on the first 20 years : 100 B euros over 20 years over 20 countries (there is 23 member states into the CERN) it is 250 M euros / year / country. This is not even calculated on the over-all project time, on on the different steps that will be happening: first FCC as electron-positron collider and then much later FCC hadron-hadron collider.

And if you are really interested into the previewed outcomes (scientifically and new techs associated):

https://indico.cern.ch/event/1040535/timetable/#20220503.det...

You can take look at the European research communities symposium that just happened recently on the future of the research topics in Europe. There are a lot of information for FCC and so on.