I hadn't made the connection, but you're right. This pattern comes up constantly when people become allies over some narrow point of convergence. In some case

I hadn't made the connection, but you're right. This pattern comes up constantly when people become allies over some narrow point of convergence. In some cases, like UBI, the alliance will probably fall apart before anything gets done. In other, like Brexit, some huge change gets accomplished by a coalition that all wanted it for different reasons. At least in the case of Brexit, the awful error was giving a simple up/down referendum. If the option to leave had been tied to a clear next step, it would have shattered the coalition and probably failed. I'm not sure if you can regulate something like this, or if you just have to push the David Camerons of the world to not screw up so badly, but forcing people to put whole processes up at once would probably force a lot more movements to sort out whether they actually have any common ground.