Skype was sold to Ebay in 2005 for 2.6 billion US$, so one would think that the founders have plenty of money. Why did they just raise what seems to be a petty amount instead of just ponying up themselves? Is it risk management, to work with other smart people, broaden the base of potential deals or what?

Or was Joost an expensive venture that left them with less funds than desireable?