2. More than one person has compared libertarians to Communist intellectuals, who also were notably fissaporous (Lenin and Stalin used rather harsh methods to address the problem).
3. The Cato-Koch controversy has been played up as an ideological split. I, however, still think of it as corporate soap opera. In my first book, Under the Radar, I talk about how difficult it is for partnership agreements to hold up under changing circumstances. I found it very common for a start-up to divide shares in a company equally and then have one partner lose interest or confidence in the company and walk away--but without anyone rewriting the agreement to give the remaining partners a bigger share in the company. You can imagine what happens years later.
Between 1996 and 1999 we must have had 5 different partnership agreements in my company. The structure of the business changed rapidly, and maintaining an appropriate legal agreement was a challenge. So if Cato and the Kochs are still trying to operate under an agreement from 30-plus years ago....well, good luck to them. That sounds like a sure-fire disaster even if there were zero ideological differences.
4. The recent dust-up over bleeding-heart libertarians, liberaltarians, or what have you. My only comment is that liberaltarianism seemed particularly attractive deep into the Bush Presidency. It seems particularly unattractive deep into the Obama Presidency. I am afraid that there is an iron law which says that politicians will betray whatever libertarian allies they attract.