The 7% ownership also allows YC Continuity to be more attractive to later stage companies. If YC already has a 7% stake, then it only needs to invest an additional post-money 13% in order to raise its ownership to 20%. A new firm coming to the cap table would want to invest 20% post-money. So, if the company doesn't need 20% capital, then YC Continuity has a significant advantage.