What's wrong with join ownership?

[gotlucky]

@FlyingAxe

That may be true, but situations oftentimes arise, when pooling together resources is necessary for a project to go on. And the parties contributing resources expect to have equal control of the project.

“Equal control” does not mean “equal full control”. They cannot both have full control at the same time. If someone has full control, then he has the final say about it. They cannot both have the final say. That is the contradiction.