To be honest, I only want to be ruled my a meritocracy if I can define myself as the most intelligent person in the world. (Or, in the upper 10% or something). A true meritocracy scares me. And this from a guy who was in the upper 10% of my high school (upper 4%). But I've seen much more brilliant people out there.
So who honestly wants a meritocracy either?
Another option would be that whoever works hard is taken care of. That sounds like the 1950s corporate job with a pension. It may be less exciting and sounds like it would produce less motive for innovation, but it is also less scary and a bit more fair than rewards to the affluent risk takers.
I have no idea how to get the best of all systems. So I make do in this one. I'm just pointing out that no system (known to man) is perfect.